P P*log P Paging P Pd P Pf P Phosphorus P Polymerase P Precise P Pro P Proline P Psoralens P packages P palindromic P parametric P parity P parking P particles P passed P patient P penetration P period P permeability P perturbation P phosphate P phosphine P phosphoprotein P phosphor P phosphorous P phosphorum P phosphorus P pins P plane P plasma P point P polar P polarization P polymer P positive P power P prediction P pressure P primary P probabilities P probability P processors P proline P propylene P protein P provider P pseudonyms P publisher P pump P1 Preparation 1 P2 Preparation 2 P3A Preparation 3A P3B Preparation 3B P3C Preparation 3C P3D Preparation 3D P4A Preparation 4A P4B Preparation 4B P4C Preparation 4C P4D Preparation 4D P5 Preparation 5 P6 Preparation 6 P7 Preparation 7 P8 Preparation 8 PA Package Access PA Parking Assistance PA Peptide amphiphile PA Performance assurance PA Performing Assets PA Phrase Alternatives PA Portfolios Allowed PA Posterior Anterior PA Power Amplifiers PA Procedure Assessment PA Pulmonary artery PA palmitic acid PA peak alignment PA phosphatic acid PA phosphatidic acid PA physical address PA polyacrylic acid PA power amplifier PA propyl acetate PA public address PA pulmonary artery PAA Phase Antenna Array PAA Phased Antenna Array PAA peptide antigen array PAA propyl acrylic acid PAB Phish Alert Button PAB pulmonary artery banded PABA Post-Activation Bonding Assembly PABA para-amino-benzoic acid PABC Para-amino-benzyl-carbonyl PAC Powdered activated carbon PAC ProSe Application Code PAC Probably Approximately Correct PAC Proxy Auto-Config PAC percent amplitude change PAC pulmonary arterial compliance PACAP Pituitary adenylate cyclase activating peptides PACAP pituitary adenylate cyclase activating peptide PACE Phage Assisted Continuous Evolution PACE Phage-Assisted Continuous Evolution PACS physical access control system PAD Peripheral arterial disease PAD Public Access Defibrillators PAD peripheral arterial disease PAD peripheral artery disease PAD pharmacodynamically-active dose PAD probabilistic anomaly detection PAE Prostate arterial embolization PAE power added efficiency PAE power-added efficiency PAE primary adverse events PAEC Pulmonary Arterial Endothelial Cell PAF Platelet Activating Factor PAF part association field PAF platelet-activating factor PAF porous aromatic frameworks PAF pure autonomic failure PAFC Phosphoric acid fuel cell PAG Photo acid generator PAH Polycyclic Aromatic Hydrocarbons PAH Pulmonary arterial hypertension PAH polycyclic aromatic hydrocarbon PAH pulmonary arterial hypertension PAH pulmonary artery hypertension PAHO Pan American Health Organization PAI2 plasminogen activator inhibitor 2 PAI2 plasminogen activator inhibitor-2 PAK p21 activated kinase PAL Phase Alternating Line PAL Phase Alternation Line PAL Predictive Analysis Library PAL Priority Access License PAL Programmable Array Logic PAL phenylalanine ammonia lyase PAL phenylalanine ammonia-lyase PAL pilot-activated lighting PAL programmable array logic PALC plasma addressed liquid crystal PAM Patient Activation Measure PAM Plant Asset Management PAM Protospacer Adjacent Motif PAM porcine alveolar macrophages PAM positive allosteric modulator PAM power amp module PAM protospacer adjacent motif PAM protospacer-adjacent motif PAM protospacer-adjacent motifs PAM pulse amplitude modulation PAM pulse amplitude modulator PAM pulse-amplitude modulated PAM pulse-amplitude modulation PAMP Pathogen-Associated Molecular Pattern PAMP pathogen associated molecular pattern PAN Personal Area Network PAN Primary Account Number PAN personal area network PAN personal area networks PAN personal-area-network PAN primary account number PAN private area network PAP Password Authentication Protocol PAP Positive Airway Pressure PAP pharmacophoric annotation points PAP positive airway pressure PAP prostatic acid phosphatase PAP pulmonary arterial pressure PAPR powered air-purifying regulator PAPR powered air-purifying respirator PAR PHOTOSYNTHETICALLY ACTIVE RADIATION PAR parabolic aluminized reflector PAR photosynthetically active radiation PAR poly-ADP-ribose PAR protease-activated receptor PARP Poly ADP ribose polymerase PARP poly-ADP-ribose polymerase PART primary age-related tauopathy PAS Power Angular Spectrum PAS Probe Antenna System PAS periodic acid-Schiff PAS physical address space PAS power angular spectrum PAS primary alcohol sulfate PAS primary alcohol sulfates PASF Prior Art Silk Fibroin PASI Psoriasis Area Severity Index PASMC pulmonary artery smooth muscle cell PASP Pulmonary arterial systolic pressure PASR partial array self-refresh PASS permanent aquatic storage structure PAST predicted average space temperature PAT Program Association Table PATA Parallel Advanced Technology Attachment PAV personal air vehicle PAW plasma arc welding PAW projector augmented wave PAWS Post-Acute Withdrawal Syndrome PB Positioning Beacon PB Prediction Block PB Prediction Blocks PB peripheral blood PB phosphate buffer PB phosphate buffers PB prediction block PBA Pending Bit Array PBA Phenyl Butyric Acid PBA Physical Block Address PBA physical block addresses PBA proximity bias average PBB provider backbone bridge PBBM park-by-brake module PBC Periodic Boundary Conditions PBC Primary Biliary Cholangitis PBC Primary biliary cirrhosis PBC polarization beam combiner PBC primary biliary cholangitis PBC primary biliary cirrhosis PBC primary billary cihrosis PBD Profile Broadcast Data PBD protein binding domain PBE Perdew-Burke-Ernzerhof PBE programming by example PBF Percent Body Fat PBF Powder Bed Fusion PBFT Practical Byzantine Fault Tolerance PBG photonic band-gap PBI partial body irradiation PBI protected bundle image PBIST programmable built-in-self-test PBK PDZ-Binding Kinase PBL peripheral blood lymphocyte PBL peripheral blood lymphocytes PBL plastic barrier layer PBM peripheral blood monocytes PBMC PERIPHERAL BLOOD MONONUCLEAR CELL PBMC Peripheral blood mononuclear cells PBMC peripheral blood mononuclear cell PBMC peripheral blood mononuclear cells PBMC peripheral blood mononucleated cells PBMF Pseudo-Boolean Matrix Factorization PBN Performance Based Navigation PBP Progressive Bulbar Palsy PBPC Peripheral blood progenitor cells PBR Prioritized Bit Rate PBR peptide binding region PBR performance-based routing PBS Pencil Beam Scanning PBS Phosphate Buffer Saline PBS Phosphate Buffered Saline PBS Phosphate Buffered Salt PBS Phosphate buffered saline PBS Phosphate-buffered saline PBS phosphate buffer saline PBS phosphate buffer solution PBS phosphate buffered saline PBS phosphate-buffered saline PBS phosphated buffered saline PBS polarization beam splitter PBS polarization beam splitters PBS polarizing beam-splitter PBS poly butylene succinate PBS primer binding site PBSF polarizing beam splitter filter PBSS personal basic service set PBST phosphate buffered saline-tween PBT Postcard Based Telemetry PBT Probabilistic Boosting-Tree PBT parallel bit test PBT poly butylene terephthalate PBV Purpose Built Vehicle PBV Purpose-Built Vehicle PBW Park-By-Wire PC Page conflict PC Pancreatic Cancer PC Periphery Contact PC Personal Computer PC Poly Carbonate PC Polymer Composition PC Portland cement PC Positive Control PC Power Conditioner PC Propylene Carbonate PC Pseudo-complementary PC pancreatic cancer PC parallel count PC peritoneal carcinomatosis PC personal computer PC personal computers PC personal computing PC phosphatidyl choline PC photonic crystal PC piezoelectric crystal PC pixel circuit PC plasma cells PC polymer composition PC positive control PC principle component PC printed circuit PC processing circuitry PC propylene carbonate PC prostate cancer PCA Principal Component Analysis PCA Principal Components Analysis PCA Principal Coordinates Analysis PCA Principal component analysis PCA Principal components analysis PCA Principal-component analysis PCA Principle Component Analysis PCA passive camera assembly PCA patient controlled analgesia PCA polymerase cycling assembly PCA post click attribution PCA principal component analysis PCA principal components analysis PCA principle component analysis PCA pyrrolidone carboxylic acid PCB Printed Circuit Board PCB print circuit board PCB printed circuit board PCB printed circuit boards PCBA Printed Circuit Board Assembly PCBN polycrystalline cubic boron nitride PCC Primary Cell Component PCC Primary Component Carrier PCC Program Counter Capability PCC point cloud compression PCC precipitated calcium carbonate PCCC parallel concatenated convolutional coding PCD Persistent Contrastive Divergence PCD personal communication device PCD pitch circle diameter PCD potassium cation diffusion PCE Path Computation Engine PCE Pooled Cohort Equation PCE Power Conversion Efficiency PCE path computation element PCE power conversion efficiencies PCE power conversion efficiency PCE pressure control equipment PCEP Path Computation Element Protocol PCF Packet Control Function PCF Policy Charging Function PCF Policy Control Function PCF photonic crystal fiber PCF policy control function PCGP Packet Communication Gateway Protocol PCH Platform Control Hub PCH platform controller hub PCH pulmonary capillary hemangiomatosis PCI Payment Card Industry PCI Peripheral Component Interconnect PCI Peripheral Component Interconnection PCI Peripheral Component Interconnects PCI Peripheral Component Interface PCI Physical Channel Id PCI Pulverised Coal Injection PCI Pulverized Coal Injection PCI percutaneous coronary intervention PCI peripheral circuit interconnect PCI peripheral component interconnect PCI peripheral component interconnect/interface PCI peripheral component interconnection PCI physical cell ID PCI physical cell identifier PCI physical cell identity PCIE Peripheral Component Interconnect Express PCL Point Cloud Library PCL Posterior Cruciate Ligament PCL plasma cell leukemia PCL posterior cruciate ligament PCL printer control language PCM Parity Check Matrix PCM Phase Change Material PCM Phase Change Memory PCM Phase change materials PCM Phase-Change Memory PCM Photo Chemical Milling PCM Plate Counting Method PCM Power Collection Module PCM Power Controller Module PCM Powertrain Control Module PCM Pulse Code Modulation PCM Pulse Coded Modulation PCM Pulse-Code Modulation PCM phase change material PCM phase change memories PCM phase change memory PCM phase-change memory PCM phase-change-memory PCM powertrain control module PCM protection circuit module PCM proton conductive membrane PCM pulse code modulated PCM pulse code modulation PCMC Peak Current Mode Controlled PCMCIA Personal Computer Memory Card Industry Association PCMCIA Personal Computer Memory Card International Association PCN Processor Control Number PCNA Programmable CRISPR Nicking Amplification PCNA Proliferating cell nuclear antigen PCNA Proliferation cell nuclear antigen PCNSL primary central nervous system lymphoma PCO Protocol Configuration Options PCO photo-catalytic oxidation PCO protocol configuration option PCP PBSS control point PCP primary care provider PCP probabilistically checkable proof PCPG Per core power gating PCPS Per-Core Performance State PCPS Primary Care PTSD Screener PCR Polymerase Chain Reaction PCR Primary Connectivity Radio PCR Principal Component Regression PCR Program Clock Reference PCR Program Configuration Registers PCR polymerase chain reaction PCR polymerase chain reactions PCR polymerase chain-reaction PCR primary connectivity radio PCR primary control radio PCR principal component regression PCRAM Phase Change Random Access Memory PCRAM phase change random-access memory PCRAM phase-change random-access memory PCRAS post-consumer recycled asphalt shingles PCRF Policy Charging Rules Function PCS Personal Communication Service PCS Personal Communication Services PCS Personal Communication System PCS Personal Communication Systems PCS Personal Communications Service PCS Personal Communications System PCS Photon Correlation Spectroscopy PCS Physical Component Summary PCS personal communication service PCS personal communication system PCS personal communications service PCS personal communications services PCS physical coding sublayer PCS physical composite score PCS power conversion system PCS profile connection space PCT Patent Cooperation Treaty PCT projected capacitive touch PCU Pattern Compute Unit PCU Power Control Unit PCU Processor Control Units PCU pattern compute unit PCU power control unit PCV Palm Creek virus PCV positive crankcase ventilation PCWP pulmonary capillary wedge pressure PD Parkinson disease PD Parkinson's Disease PD Phase Day PD Photo Diode PD Pierce's disease PD Power Delivery PD Power Distribution PD Powered Device PD Programmed death PD Progressive Disease PD Progressive Disease/Relapse PD Progressive disease PD Projective Dynamics PD Proteomics Database PD Proton Density PD packet duplication PD pedestrian detection PD pelletizing die PD phase detector PD photo detector PD photo-dissociation PD position device PD power delivery PD powered device PD print dimensions PD progressive disease PD proportional-derivative PD protection domain PD protein D PD proton density PD3 post-dose 3 PDA Personal Data Assistant PDA Personal Digital Assistant PDA Personal Digital Assistants PDA Portable Digital Assistant PDA Protein Design Automation PDA patent ductus arteriosus PDA per-device addressability PDA per-device-addressability PDA person& digital assistant PDA personal data assistant PDA personal digital assistance PDA personal digital assistant PDA personal digital assistants PDA portable data assistant PDA portable digital assistant PDA post-deposition anneal PDAC Pancreatic ductal adenocarcinoma cell PDAI Perianal Disease Activity Index PDB PACKET DELAY BUDGET PDB Protein Data Bank PDB plastic digesting bacteria PDB post-develop bake PDC Pacific Disaster Center PDC Partial Directed Coherence PDC Personal Digital Cellular PDC Post Discovery Complete PDC polycrystalline diamond compact PDC pulse distance code PDC pyruvate dehydrogenase complex PDCC Pressure Discriminating Cartridge Chamber PDCP Packet Data Control Protocol PDCP Packet Data Convergence Protocol PDCP package data convergence protocol PDCP packet data convergence protocol PDCP protocol data convergence protocol PDD Parkinson's disease dementia PDD Portable Detection Device PDD Promised Delivery Date PDD premenstrual dysphoric disorder PDDOR PHASE DILUTION DEMAND OXYGEN REGULATOR PDE Permissible Daily Exposure PDE photon-detection efficiency PDE pyridoxine dependent epilepsy PDF Policy Decision Function PDF Portable Document Format PDF Powder Diffraction File PDF Probability Density Function PDF policy decision function PDF portable document file PDF portable document format PDF probability density function PDF probability distribution function PDFF proton density fat fraction PDGF Platelet Derived Growth Factor PDGF Platelet-Derived Growth Factor PDGF platelet derived growth factor PDGF platelet derived growth factors PDGF platelet-derived growth factor PDGF platelet-derived growth factors PDGFD platelet derived growth factor D PDGFR platelet derived growth factor receptor PDGFR platelet-derived growth factor receptor PDGFR platelet-derived growth factor-receptors PDGM Patient Driven Groups Model PDI predicted dose image PDIC power delivery integrated circuit PDIP portal dose image prediction PDK pyruvate dehydrogenase kinase PDL Pixel Define Layer PDL Polarization Dependent Loss PDL page description language PDL pixel definition layer2303 PDL point density level PDL poly-D-lysine PDL poly-DL-lactide PDLA poly-D-lactic acid PDLC Polymer Dispersed Liquid Crystal PDLC polymer-dispersed liquid crystal PDM Point Distribution Model PDM Polled Device Monitor PDM product data management PDM pulse density modulated PDM pulse density modulation PDM pulse-density modulated PDM pulse-density modulation PDMA Pattern Division Multiple Access PDN Packet Data Network PDN Protocol Data Network PDN painful diabetic neuropathy PDN power distribution network PDN protocol data network PDO Patient derived organoid PDOF Principal Direction of Force PDOF Principal Directions of Force PDOS projected density of states PDP Plasma Display Panel PDP Plasma display panels PDP Policy Decision Point PDP patterned defect pixels PDP plasma display panel PDP policy decision point PDP power delay profile PDP pulse decay permeability PDP pulse-decay permeability PDR Physicians' Desk Reference PDR packet detection rule PDR proliferative diabetic retinopathy PDS Pedestrian Detection System PDSN pairwise differential siamese network PDSS post decoding soft syndrome PDTA propylene diamine tetraacetic acid PDTA propylene diamine tetracetic acid PDTM phone data transfer machine PDU PACKET DATA UNIT PDU Power Distribution Unit PDU Protocol Data Unit PDU Protocol Date Unit PDU packet data unit PDU physical data unit PDU power distribution unit PDU protocol data unit PDU protocol data units PDX Patient-Derived Xenograft PDX patient derived xenograft PDX patient-derived xenograph PE Pose Estimation PE Private Equity PE Provider Edge PE packet extension PE parallel element PE petroleum ether PE phosphatidyl ethanolamine PE physical examination PE pituitary extract PE polarization efficiency PE positive electrode PE power efficiency PE primary erythemalgia PE processing element PE propylene ethylene PE provider equipment PE pulmonary embolism PE1 Preparative Example 1 PE2 Preparative Example 2 PEALD Plasma Enhanced Atomic Layer Deposition PEALD plasma-enhanced atomic layer deposition PEB Post exposure bake PEBD Partial external biliary diversion PEC Program Erase Cycles PEC program erase cycle PECVD Plasma Enhanced Chemical Vapor Deposition PECVD plasma enhance chemical vapor deposition PECVD plasma enhanced chemical vapor deposition PECVD plasma-enhanced chemical vapor deposition PECVD plasma-enhanced chemical vapour deposition PED paclitaxel eluting device PED partial Euclidean distance PED portable electronic device PEDF Pigment Epithelium Derived Factor PEDF Pigment epithelium-derived factor PEDV Porcine Epidemic Diarrhea Virus PEEK poly-ether-ether-ketone PEEP Positive End Expiratory Pressure PEEP Positive End-Expiratory Pressure PEF Plasmon-enhanced fluorescence PEFR Peak expiratory flow rate PEG percutaneous endoscopic gastrostomy PEGF pigment epithelium growth factor PEI Paul-Ehrlich-Institut PEI Permanent Equipment Identification PEI Permanent Equipment Identifier PEI Pre-EFI Initialization PEI permanent equipment identifiers PEK polyether-ether ketone PEKK poly ether ketone ketone PEL permissible exposure limit PEM Prediction Error Method PEM Protein epitope mimetics PEM Proton exchange membrane PEM polymer electrolyte membrane PEM polymorphic epithelial mucin PEM proton exchange membrane PEM proton-exchange membrane PEMFC Polymer electrolyte membrane fuel cell PEMS Portable Emissions Measurement Systems PEN poly-ethylene naphthalate PEO plasma electrolytic oxidation PEO poly ethylene oxide PEP Platelet Enriched Plasma PEP Platelets Enriched Plasma PEP Politically Exposed Person PEP phenyl ethyl piperazine PEP phononically-enhanced plasmonic PEPD paroxysmal extreme pain disorder PER Packet Error Rate PERC passivated emitter rear cells PERL practical extraction report language PERS Personal Emergency Response Systems PES packetized elementary streams PES payment entity specified PES pharyngeal electrical stimulation PES poly ether sulfone PES poly ether sulfones PES position error sensor PES positive error signal PES potential energy surface PET Positron Emission Tomography PET Positron Emission Topography PET pancreatic endocrine tumor PET poly ethylene terephthalate PET position emission tomography PET positron emission tomography PETEOS plasma enhanced tetra ethyl ortho silicate PETEOS plasma-enhanced tetra ethyl ortho silicate PETG poly-ethylene terephthalate glycol PEV pure electrical vehicle PEW process effluent water PEWS pediatric early warning scores PF Paging Frame PF Physical Function PF Prediction Function PF Processing Filter PF Pulmonary fibrosis PF Pulse Frequency PF packet footer PF paging frame PF pelvic floor PF phenol formaldehyde PF phloroglucinol furfuraldehyde PF power factor PF pulmonary fibrosis PF pupil function PFA Performance Factor Analysis PFA Pulsed Field Ablation PFA propoxylated fatty alcohols PFA pulsed field ablation PFAM propoxylated fatty acid monoethanolamides PFC Power Factor Correction PFC Priority Flow Control PFC power factor correction PFC power-factor-correction PFCP Packet Forwarding Control Protocol PFD Packet Flow Description PFD Primary Flight Display PFD phase frequency detector PFD phase-frequency detector PFD primary flight displays PFGE Pulsed Field Gel Electrophoresis PFGE Pulsed-field Gel Electrophoresis PFIC progressive familial intrahepatic cholestasis PFM Piezoresponse force microscopy PFM pulse frequency modulation PFO patent foramen ovale PFR Plug Flow Reactor PFR patient fluid removal PFR plug flow reactors PFR plug-flow reactor PFS Progression Free Survival PFS Progression-Free Survival PFS perfect forward secrecy PFS progression free survival PFS progression-free survival PFS progression-free-survival PFT pulmonary function testing PFU plaque forming units PFU plaque-forming-units PFVMM Pathogen Family Variant Memberships Models PG Power gating PG parotid gland PG phosphatidyl glycerol PG physiological glucose PG plasma gas PG propylene glycol PG protecting group PG protein glutaminase PGA Patient Global Assessment PGA Patient's Global Assessment PGA Pediatric Granulomatous Arthritis PGA Physician Global Assessment PGA Physician's Global Assessment PGA Professional Golfers' Association PGA pediatric granulomatous arthritis PGA pin grid array PGA poly-glycolic acid PGA programmable gain amplifier PGA programmable gain amplifiers PGA programmable gate array PGAS Partitioned Global Address Space PGBT positive gate bias temperature PGC Polarization gradient cooling PGC primordial germ cell PGD preimplantation genetic diagnosis PGEC Phonon Glass Electron Crystal PGEE propylene glycol ethyl ether PGF placenta growth factor PGF placental growth factor PGL PILOT GAMBLING LEAGUE™ PGM Personal Genome Machine PGM platinum group metal PGMA propylene glycol methyl acetate PGME propylene glycol methyl ether PGME propylene glycol monomethyl ether PGMEA Propylene glycol monomethyl ether acetate PGMEA propylene glycol methyl ether acetate PGMEA propylene glycol monomethyl ether acetate PGP Pretty Good Privacy PGPB plant growth promoting bacteria PGPR plant growth promoting rhizobacteria PGPR plant growth-promoting rhizobacteria PGS Provisioning Gateway System PGS partial genetic sequence PGU picture generating unit PGW pressure gas welding PH Page hit PH Proportional hazards PH Pulmonary hypertension PH packet header PH picture header PH picture-header PH power headroom PH precipitation-hardened PH previous hash PH pulmonary hypertension PHDS Protected HTTP Dynamic Streaming PHE Partial Homomorphic Encryption PHEV Parallel Hybrid Electrical Vehicles PHI Protected Health Information PHI peptide histidine isoleucine PHI personal health information PHLS Protected HTTP Live Streaming PHN Post herpetic neuralgia PHN post-herpetic neuropathy PHP PHP Hypertext Preprocessor PHP PHP Hypertext Processor PHP PHP: Hypertext Preprocessor PHP Perl, hypertext preprocessor PHPG Purified Hydrogen Peroxide Gas PHQ Patient Health Questionnaire PHR Power Headroom Report PHR personal health records PHR power headroom reporting PHS Personal Handyphone System PHS Public Health Service PHV packet header vector PI PROFINET International PI Passive immunization PI Patient Information PI Pearl Index PI Pelvic Incidence PI Physik Instrumente PI Propidium Iodid PI Propidium Iodide PI Proportional-Integral PI Protocol Identifier PI paging inquiry PI path intersection PI patient interface PI perfusion index PI phase interpolator PI phosphatidyl inositol PI photo-ionization PI polydispersity index PI povidone-iodine PI power inductor PI power integrity PI prediction intervals PI predictive insights PI preemption indication PI process information PI propidium iodide PI proportional integral PI proportional-integral PI pulsatility index PIC Photonic Integrated Circuit PIC Pre Initiation Complex PIC parallel interference cancellation PIC peripheral interface controllers PIC photonic integrated circuit PIC photonic integrated circuits PIC plane independent command PIC pre-initiation complex PIC programmable integrated circuit PIC programmable intelligent computer PIC programmable intelligent computers PIC protease inhibitor cocktail PICC peripherally inserted central catheter PICU pediatric intensive care unit PICV pressure independent control valve PICVD plasma impulse chemical vapor deposition PID Pelvic Inflammatory Disease PID Potential Induced Degradation PID pelvic inflammatory disease PID photo Imagable Dielectric PID photo imageable dielectric PID photo-imageable dielectric PID photo-ionization detector PID proportional integral derivative PID proportional integral differential PID proportional-integral-derivation PID proportional-integral-derivative PID published inside diameter PIDF Presence Information Data Format PIDS Path Instersection Data Structure PIDS path intersection data structure PIE Photo Imageable Encapsulant PIF part intensity field PIFA Planar Inverted FAntenna PIFA planar inverted-Fantenna PIFE protein-induced fluorescence enhancement PIG picture-in-guide PIH post-inflammatory hyperpigmentation PII Person Identifiable Information PII Personal Identifiable Information PII Personally Identifiable Information PII Primary Irritation Index PII personal identifying information PII personally identifiable information PII personally identifying information PIL Polymorphic Interface Layer PIM PROCESSING-IN-MEMORY PIM Processing in-memory PIM Processing-In-Memory PIM Protocol Independent Multicast PIM Protocol-Independent Multicast PIM personal information management PIM processor-in-memory PIN Personal Identification Number PIN penile intraepithelial neoplasia PIN personal identification number PIN phase inversion nanoencapsulation PIN positive-intrinsic-negative PIN property identification number PIP Picture-in-Picture PIP photo imaging plate PIP picture-in-picture PIPE probability interval partitioning entropy PIR Passive Infra Red PIR Passive Infra-Red PIR Pre-Invested Reserve PIR Private Information Retrieval PIR Progressive Intra Refresh PIR passive infer red PIR passive infra-red PIS plasma ion source PISA polymerization-induced self-assembly PISO Parallel In Serial Out PIT phase-inversion temperature PIV Particle Image Velocimetry PIV Personal Identification Verification PIV Personal Identity Verification PIV powered industrial vehicle PJI periprosthetic joint infection PJP Poly Jet Printing PK protein kinases PK public key PK pyruvate kinase PKA Protein Kinase A, PKA Protein kinase A PKA partial knee arthroplasty PKA protein kinas A PKA protein kinase A PKB Protein Kinase B PKC Protein Kinase C PKCS Public-Key Cryptography Standards PKCΑ protein kinase CΑ PKD POLYCYSTIC KIDNEY DISEASE PKD Patient Knowledge Distillation PKE public key encryption PKI Public Key Infrastructure PKI public key infrastructures PKI public-key infrastructure PKS Power Keeping Signal PL Polar Lipid PL Power-Law PL Pulsed light PL path loss PL peak limiter PL pinning layer PL programmable logic PLA Poly Lactic Acid PLA Programmable Logic Array PLA Programmable Logic Arrays PLA physical layer abstraction PLA poly-lactic acid PLA programmable logic array PLA programmable logic arrays PLA proximity ligation assay PLA pyogenic liver abscesses PLC Packet Loss Concealment PLC Peptide Lipid Conjugate PLC Phospho-Lipase C PLC Planar Light Circuit PLC Planar Lightwave Circuit PLC Power Line Communication PLC Power Line Communications PLC Power-line Communication PLC Programmable Logic Controller PLC Programmable Logic Controllers PLC peak luminance control PLC penta-level cell PLC penta-level cells PLC power line carrier PLC power line communication PLC power line communications PLC power-line carrier PLC programmable logic circuit PLC programmable logic circuits PLC programmable logic control PLC programmable logic controller PLC programmable logic controllers PLC programmable-logic controllers PLC programming logic controller PLCC Plastic Leaded Chip Carrier PLCP PHY Layer Convergence Procedure PLCP Physical Layer Convergence Procedure PLCP Physical Layer Convergence Protocol PLD Programmable Logic Device PLD Programmable Logic Devices PLD pegylated liposomal doxorubicin PLD physical later data PLD physical layer data PLD programmable logic device PLD programmable logic devices PLD pulse laser deposition PLD pulsed laser deposition PLD pulsed laser diode PLDA probabilistic linear discriminant analysis PLDS Pumpmatic Liquid-Dispensing System PLED polymer light-emitting diode PLED polymer light-emitting diodes PLGA poly-L-glycolic acid PLHV porcine lymphotropic herpes virus PLIF Posterior Lumbar Interbody Fusion PLL Phase Locked Loop PLL Phase Locked Loops PLL Phase-Locked Loop PLL Poly-L-Lysine PLL phase lock loop PLL phase locked loop PLL phase-lock loop PLL phase-locked loop PLL phase-locked-loop PLL phased locked loop PLL poly-L-lysine PLLA Poly-L-lactic acids PLLA poly-L-lactic acid PLLA poly-L-lactide acid PLM Polarised Light Microscopy PLM Polarized Light Microscopy PLM Product Lifecycle Management PLMC Projected Langevin Monte Carlo PLMN Public Land Mobile Network PLMN public land mobile networks PLND pelvic lymph node dissection PLOT Porous Layer Open Tubular PLP Physical Layer Pipe PLP perceptual linear predictive PLP physical layer pipe PLR Packet Loss Rate PLR Packet Loss Ratio PLR Pupillary light reflex PLS Partial least square PLS Primary Lateral Sclerosis PLS parasitic light sensitivity PLS partial least square PLS partial least squares PLS physical layer signaling PLS pregnant leach solution PLS primary lateral sclerosis PLSA Probabilistic Latent Semantic Analysis PLSDA partial least squares discriminant analysis PLSI Power Large Scale Integration PLSR Partial Least Squares Regression PLU programmable logic unit PM Packet Manager PM Page Miss PM Particulate Matter PM Perception Monitoring PM Performance Management PM Permanent Magnet PM Personal Mobility PM Phase Modulation PM Physical Mixture PM Power Management PM Precision Medicine PM Predictive maintenance PM papillary muscles PM passive matrix PM peer mode PM performance management PM peritoneal metastasis PM permanent magnet PM phase modulated PM phase modulation PM pitching machine PM plasma membrane PM poor metabolizer PM preventive maintenance PM process module PMA Perpendicular Magnetic Anisotropy PMA Phorbol Myristoyl Acetate PMA Power Matters Alliance PMA phorbol myristate acetate PMA physical medium attachment PMA polymer modified asphalt PMA power matters alliance PMA progressive muscular atrophy PMAC permanent-magnet alternating current PMC Power Management Controller PMC platform management controller PMC power management circuitry PMC profile management credentials PMC program memory controller PMC programmable metallization cell PMCA plasma membrane calcium ATPase PMD Pelizaeus-Merzbacher disease PMD Phase Measuring Deflectometry PMD Photonic Mixer Device PMD Poll Mode Driver PMD personal media device PMD polarization mode dispersion PMD polarization-mode dispersion PME Particle Mesh Ewald PME Particle-Mesh-Ewald PME Predictive Modeling Engine PMF Performance Measurement Function PMF Polymer Microwave Fiber PMF polarization-maintaining fiber PMF probability mass function PMG permanent magnet generator PMI Precoder Matrix Indicator PMI Precoding Matrix Index PMI Precoding Matrix Indicator PMI preceding matrix index PMI precoding matrix index PMI precoding matrix indicator PMIC Power Management Integrated Circuit PMIC power management integrated circuitry PMIP Proxy Mobile Internet Protocol PMK pairwise master key PML progressive multifocal leukoencephalopathy PMMVD Pattern matched motion vector derivation PMO Project Management Office PMO phosphoramidate morpholino oligomer PMO phosphorodiamidate morpholino oligo PMO phosphorodiamidate morpholino oligomer PMO phosphorodiamidate morpholino oligomers PMO phosphorodiamidate morpholino oligonucleotide PMOLED passive-matrix organic light-emitting diode PMP Personal Media Player PMP Portable Multimedia Player PMP physical memory protection PMP poly methyl pentene PMP portable media player PMP portable multimedia player PMP portable multimedia players PMR Private Mobile Radio PMR perpendicular magnetic recording PMS Power Management System PMS Propensity Matching Score PMS Property Management System PMSA Personal Media Streaming Appliance PMSF phenyl methyl sulfonyl fluoride PMSG pregnant mare serum gonadotropin PMSG pregnant mare's serum gonadotrophin PMSM Permanent Magnet Synchronous Motor PMT Program Map Table PMT peak metal temperature PMT photo-multiplier tube PMU Pattern Memory Unit PMU Pattern Memory Units PMU Power Management Unit PMU phasor measurement unit PMU power management unit PMUT Piezoelectric Micromachined Ultrasonic Transducers PMUT piezoelectric micromachined ultrasonic transducer PMV Peanut Mottle Virus PMVP Planar Motion Vector Prediction PN Primary Neutralisation PN Pseudo-Noise PN phase noise PN phenol novolac PN positive-negative PN pseudo noise PNA Passive NOx Adsorber PNA Peptide Nucleic Acid PNA Peptide Nucleic Acids PNA peptide nucleic acid PNA peptide nucleic acids PNA peptide-nucleic acid PNC Physical Network Controller PNC phone number certification PND pathologic nipple discharge PND personal navigation device PND portable navigation device PNFS peripheral nerve field stimulation PNG Portable Network Graphic PNG Portable Network Graphics PNG portable network graphic PNG portable network graphics PNH Paroxysmal Nocturnal Hemoglobinuria PNI peripheral nerve injury PNL pulsed nucleation layer PNLC polymer network liquid crystal PNN probabilistic neural network PNO payment network operator PNP Perspective NPoint PNR passenger name record PNS Peripheral Nerve Stimulation PNS peripheral nervous system PNS positive-negative selection PNT Peripheral Neuritis Trauma PNT primitive neuroectodermal tumor PO PUSCH occasion PO Padlock Oligonucleotide PO Paging Occasion PO propylene oxide PO purchase order POA Posterior Occlusion Aspect POA proof of authority POAG primary open-angle glaucoma POC PTT over Cellular POC Picture Order Count POC Point of Care POC Point-Of-Care POC Portable Oxygen Concentrator POC picture order count POC picture order counter POC point-of-care POC product of conception POCT point of care testing POD Proper Orthogonal Decomposition POD proof of delivery POE POWER OVER ETHERNET POF plastic optical fiber POF porous organic frameworks POH progressive osseous heteroplasia POI Point of Interest POI Points of Interest POI payload of interest POI point of interconnect POI point of interest POI point-of-interest POI points-of-interest POI protein of interest POJO plain-old-Java-object POM Polarized Optical Microscopy POM Poly Oxy Methylene POM proof of maintenance POMDP Partially Observable Markov Decision Process POME Palm Oil Mill Effluent POMS Profile of Mood States PON Power Off Normal PON passive optical network POP Package-On-Package POP Pelvic Organ Prolapse POP Persistent Organic Pollutant POP Post Office Protocol POP pelvic organ prolapse POP performance optimized polymer POP porous organic polymers POP post office protocol POR pay-off reel POR point of reception POS POINT OF SALE POS Packet Over SONET POS Part-Of-Speech POS Parts-of-Speech POS Passive Optical Splitters POS Point Of Sale POS Point of Sales POS Point-Of Sale POS Point-Of-Sale POS part-of-speech POS parts of speech POS point of sale POS point of sales POS point of service POS point-of-sale POS point-of-sales POS point-of-service POS proof of stake POT Proof-of-Transit POTS Plain Old Telephone Service POTS Plain Old Telephone System POTS Plain Old Telephone Systems POTS plain old telephone service POTS plain old telephone system POV point of view POW Proof of work PP PVC, polypropylene PP Pancreatic Peptide PP Pancreatic Polypeptide PP Parallel Processing PP Payment Provider PP Per Protocol PP Peyer's Patch PP Platelet Pallet PP Polyurea, Polypropylene PP pancreatic peptide PP per-protocol PP personal protection PP polymers, polypropylene PP polypropylene polymers PP polyurethane, polypropylene PP polyurethanes, polypropylene PP polyvinyl, polypropylene PP powdered polypropylene PP primary platform PP propyl propionate PP pulse pressure PPA personal protection article PPA physical page address PPA pre-power amplifier PPAR peroxisome proliferator activated receptor PPAR peroxisome proliferator-activated receptor PPAR peroxisome proliferators-activated receptors PPC Population patch clamp PPC Power Plant Controller PPC phloem parenchyma cells PPC piston pressure control PPC power plant controller PPCA Probabilistic Principal Component Analysis PPD Presidential Policy Directive PPD paging policy differentiation PPD paired-pulse depression PPDU PHY Protocol Data Unit PPDU PLCP Protocol Data Unit PPDU Physical Protocol Data Unit PPE Palmar-plantar Erythrodysesthesia PPE Personal Protective Equipment PPE Precise Positioning Engine PPE personal protection equipment PPE personal protective equipment PPE photosynthetic photon efficacy PPE prediction preference engine PPE preference prediction engine PPE private pathway endpoint PPE property-preserving encryption PPEMS personal protective equipment management system PPEQ Peak Psychedelic Experience Questionnaire PPF Packet Processing Function PPF Paired-pulse facilitation PPF Philips perceptualizer function PPF paint protection film PPF paired pulse facilitation PPF porous polymer frameworks PPG prandial Plasma Glucose PPG promoted price group PPH parts per hour PPH primary pulmonary hypertension PPI Post Passivation Interconnect PPI pea protein isolate PPI picks per inch PPI picks-per-inch PPI pics-per-inch PPI pixels per inch PPI primary platform interface PPI protein-protein interaction PPI proton pump inhibitor PPI pulses per inch PPLN periodically poled lithium niobate PPM Pairs Per Million PPM Proton Precession Magnetometers PPM Pulse Position Modulation PPM Pulse-Position Modulation PPM parts per million PPM patient position monitoring PPM pulse position modulation PPM pulses per minute PPMCC Pearson product-moment correlation coefficient PPMS primary progressive multiple sclerosis PPN Per Packet Nonce PPO PEG, polypropylene oxide PPO Proximal Policy Optimization PPO poly-phenylene oxide PPO polyacrylamide, polyimine,polypropylene oxide PPO preferred provider organization PPO preferred providers organization PPP Platelet Poor Plasma PPP Precise Point Positioning PPP pentose phosphate pathway PPP platelet-poor plasma PPPP ProSe Per-Packet Priority PPPR ProSe-per-packet reliability PPS PP, polyphenylene sulfide PPS Per Protocol Set PPS Picture Parameter Set PPS Pictures Parameters Set PPS Poly Phenylene Sulfide PPS picture parameter set PPSE proximity payment system environment PPSK Passive phase shift keying PPSK Passive phase-shift-keying PPSK private pre-shared key PPT Physical Performance Test PPT proximal polypurine tract PPTP Pediatric Preclinical Testing Program PPTS pyridinium para-toluene-sulfonate PPU Physics Processing Unit PPU parallel processing unit PPU physical processing unit PPU physics processing unit PPU pre-purification unit PPV pay-per-view PPV positive predictive value PQ Perceptual Quantizer PQAR passive quench active reset PQI PC5 QoS identifier PQRV pairing quality rating value PR PLASMON RESONANCE PR Partial Remission PR Partial Response PR Perfect Recovery PR Port Reverse PR Precision Recall PR partial regression PR partial remission PR partial response PR partial responses PR patial responder PR perfect reconstruction PR photo resist PR pregnancy rate PR progesterone receptor PR progesterone-receptor PR pulse rate PRA Physical Resource Allocation PRAM Parallel Random-Access Machine PRAM Persistent Random Access Memory PRAM parameter random access memory PRAM phase random access memory PRAM programmable random access memory PRB Physical Resource Block PRB physical resource blocks PRB physical resources block PRBS Pseudo Random Binary Sequence PRBS pseudo-random binary sequence PRCEC primary renal cortical epithelial cells PRD Potato Root Diffusate PRE photo-resist element PREN Pitting Resistance Equivalent Number PRES posterior reversible encephalopathy syndrome PRF Pseudo-Random Function PRF pulse repetition frequency PRG PHYSICAL RESOURCE GROUP PRH primary rat hepatocytes PRI PUCCH resource indicator PRI Photochemical Reflectance Index PRL preferred roaming list PRM Probe Rate Model PRM preserved random memory PRN pseudo-random number PRNG pseudo random number generator PRNG pseudo-random number generator PRNT Plaque Reduction Neutralization Test PRO Participant Reported Outcomes PRO Patient Reported Outcome PRO Patient-Reported Outcome PRO patient reported outcomes PROM Programmable Read Only Memory PROM Programmable Read-Only Memory PROM programmable read only memory PROM programmable read-only memory PROM programmable-read-only memory PRP Parallel Redundancy Protocol PRP Platelet Rich Plasma PRP Platelet-rich plasma PRP Prolactin Releasing Peptide PRP platelet-rich plasma PRP predetermined rest position PRP proliferin-relaxed protein PRR Pattern Recognition Receptor PRS POSITIONING REFERENCE SIGNAL PRS Polygenic Risk Score PRS Positioning Reference Signal PRS Processing Representative Sample PRS patient reference sensors PRS perforated reflective shield PRS polygenic risk score PRS polymorphism ratio sequencing PRS positioning reference signal PRS positioning reference signals PRVC Pressure-Regulated Volume Control PRW Persistent Random Walk PS PARENTAL SUPPORT™ PS Packet Switch PS Packet Switched PS Packet Switching PS Packet-Switched PS Particle size PS Permanent Set PS Phase separator PS Physics Solver PS Policy Server PS Posterior Stabilized PS Power Save PS Precipitated silica PS packaging signal PS packet switched PS paraffin sulfonates PS parameter server PS patient score PS phosphatidyl serine PS porosity score PS positioning server PS posterior segment PS power save PS power saving PS pressure side PS pressure switch PS processing server PS processing system PS processor subsystem PS program stream PS propane sultone PS provisioning servers PS proximity sensor PS pseudosubstrate segment PSA PDU Session Anchor PSA Pressure Sensitive Adhesive PSA Pressure Sensitive Adhesives PSA Pressure Swing Adsorption PSA Prostate Specific Antigen PSA Prostate-specific antigen PSA Public Service Announcement PSA pace-sense analyzer PSA particle size analyzer PSA polymer sustained alignment PSA power system automation PSA pressure sensitive adhesive PSA pressure sensitive adhesives PSA pressure sensitive agent PSA pressure swing adsorption PSA pressure-sensitive adhesive PSA pressure-sensitive adhesives PSA prostate specific antigen PSA prostate surface antigen PSA prostate-specific antigen PSADT prostate specific antigen doubling time PSADT prostate-specific antigen doubling time PSAP Public Safety Answering Point PSB Phosphate solubilizing bacteria PSC Permanent-Split Capacitor PSC Power Supply Configuration PSC Primary Sclerosing Cholangitis PSC parasitic surface conduction PSC patient side cart PSC permanent split capacitor PSC pluripotent stem cell PSC power sleep controller PSC primary sclerosing cholangitis PSC primary serving cell PSCA prostate stem cell antigen PSD Particle Size Distribution PSD Pore size distributions PSD Power Spectral Density PSD Pulse shape discrimination PSD particle size distribution PSD particle size distributions PSD position sensitive detector PSD power spectrum density PSD program storage device PSDN public switched data network PSDU PHY Service Data Unit PSDU Packet Service Data Unit PSE Power Sourcing Equipment PSE Principal Structural Element PSE Proximal Sequence Element PSE platform services enclave PSE power sourcing equipment PSF POINT SPREAD FUNCTION PSF point-spread function PSFS Penn Spasm Frequency Scale PSG Phospho-Silicate Glass PSG phosphor-silicate glass PSG phosphoric silicate glass PSG phosphorus silicate glass PSG precision-shaped grain PSGC polarization splitting grating couplers PSGN Paging Subframe Grouping Number PSI Position-Specific Iterated PSI Private Set Intersection PSI Program Specific Information PSI Puckorius Scaling Index PSI per Square Inch PSI program specific information PSI program-specific information PSK Phase Shift Keying PSK Pre-Shared Keys PSK Pre-Shared-Key PSK phase shift keyed PSK phase shift keying PSK phase-shift keying PSK pre-shared key PSL Passive Self-Ligation PSL post-sweep logic PSLC polymer stabilized liquid crystal PSM PaaS Service Manager PSM Parallel Single-Mode PSM Porcine submaxillary mucin PSM Power Saving Mode PSM phosphate solubilizing microbes PSM piezoelectric sensor material PSM power saving mode PSMA Prostate-specific MEMBRANE ANTIGEN PSMA prostate specific membrane antigen PSMA prostate-specific membrane antigen PSMA prostrate-specific membrane antigen PSMP Power Save Multi Poll PSN PAN sequence number PSN Packet Sequence Number PSN Packet Switched Network PSN packet sequence number PSN packet sequence numbers PSP Packet Synchronization Preamble PSP Phase-shifting profilometry PSP Progressive Supranuclear Palsy PSR Panel Self Refresh PSR photosensitive solder resist PSRR Power Supply Rejection Ratio PSS PS Streaming Service PSS Packet Switching Streaming PSS Primary Synchronization Signal PSS physiological saline solutions PSS primary synchronization signal PSS primary synchronization signals PSSS Primary Sidelink Synchronization Signal PSST Product-State-Space Technique PSTN Public Switched Telephone Network PSTN Public Switched Telephone Networks PSTN public switch telephone network PSTN public switched telecommunication network PSTN public switched telephone network PSTN public-switched telephone network PSU Power Supply Unit PSV Power Supply Value PSV Pressure Support Ventilation PSVA Polyer-Stabilized Vertical Alignment PSW Polynomial Symbol Waveform PT Pelvic Tilt PT Prediction Tree PT Prep Tank PT Prothrombin Time PT Pulse Thermography PT Pulsed Thermography PT parity-time PT pertussis toxin PT phase tracking PT pilot tone PT pole thickness PT preferred term PT pressure transducer PT program targeting PT prothrombin time PTA Purified Terephtalic Acid PTA percutaneous transluminal angioplasty PTB Power Trade Block PTB Pre-Term Birth PTB photochemical tissue bonding PTB potassium tert-butoxide PTC Positive Temperature Coefficient PTC peptidyl transferase center PTC positive temperature coefficient PTC positive thermal coefficient PTCA percutaneous transluminal coronary angioplasty PTCI Post-Traumatic Cognitions Inventory PTCL peripheral T-cell lymphoma PTD positive-tone development PTD protein transduction domain PTD protein transduction domains PTE page table entry PTF Phase Transfer Function PTF polymer thick film PTGI Post Traumatic Growth Inventory PTGS post-transcriptional gene silencing PTH plated through hole PTI Precoding Type Indicator PTI precoder type indication PTI precoding type indicator PTI preferred transmission indicator PTI procedure transaction identifier PTK pairwise transient key PTK protein tyrosine kinase PTK2 Protein Tyrosine Kinase 2 PTLD post-transplant lymphoproliferative disorder PTLDS Post-Treatment Lyme Disease Syndrome PTM Point-to-MultiPoint PTM pattern transfer molding PTM post-translational modification PTM post-translational modifications PTM predictive technology model PTN packet transport network PTO power take off PTO power take-off PTP Peer-to-Peer PTP Point-to-Point PTP Precision Time Protocol PTP Press Through Package PTP Press-through pack PTP peer to peer PTP press through packages PTR Photo Thermo Refractive PTRS PHASE TRACKING REFERENCE SIGNAL PTRS phase tracking reference signals PTS Presentation Time Stamp PTS Presentation Time-Stamp PTS Protein thermal shift PTS partial transmit sequence PTS post-thrombotic syndrome PTS probing time slots PTSA p-toluene sulfonic acid PTSD Post Traumatic Stress Disorder PTSD Post-Traumatic Stress Disorder PTT Platform Trust Technology PTT Push-to-Talk PTT partial thromboplastin time PTT pulse transit time PTT pulse transmit time PTT push-to-talk PTTD photonic-true-time-delay PTU Personal Testing Unit PTV particle tracking velocimetry PTV planning treatment volume PTV programmable temperature vaporizing PTVAC Percent Time-Voltage Area Change PTZ pan tilt zoom PU Partition Unit PU Prediction Unit PU picture unit PU prediction unit PU prediction units PU primary user PUD per unit drug PUD pressure ulcer diagnostic PUE Permitted User Engine82 PUF Physical Unclonable Function PUF physically unclonable function PUI Public User Identity PUT Periodic Update Timers PV photo-voltaic PV plasma volumes PV plastic viscosity PV polycythemia vera PV pressure vessel PV pressure-volume PV prostate volume PVA Poly vinyl alcohol PVA Poly-Vinyl Acetate PVA patterned vertical alignment PVA poly vinyl alcohol, PVAP Poly Vinyl Acetate Phthalate PVB passive vehicle barrier PVC Poly Vinyl Chloride PVC poly-vinyl chloride PVC positive vehicle control PVD Peripheral vascular disease PVD Physical Vapor Deposition PVD peripheral vascular disease PVD physical vapor deposition PVD physical vapor deposition, PVD physical vapour deposition PVD plasma vapor deposition PVH pulmonary venous hypertension PVI Perfusion Variability Index PVI pleth variability index PVI plethysmograph variability index PVI pulmonary vein isolation PVI pulse variability index PVMD peripheral virtualization management device PVOD pulmonary veno-occlusive disease PVR Personal Video Recorder PVR pulmonary vascular resistance PVS Plasma volume status PVT Physical Vapor Transport PVT Psychomotor Vigilance Test PVT process-voltage-temperature PVT psychomotor vigilance tasks PVV PIN Verification Value PVX Potato Virus X PW Pulse Width PW plane wave PW projection welding PW pulse width PWA progressive web application PWB printed wiring board PWB printed wiring boards PWHT Post Weld Heat Treatment PWL paw withdrawal latency PWL piece-wise linear PWM Pulse Width Modulation PWM Pulse-Width Modulation PWM Pulse-Width-Modulation PWM Pulse-width modulation PWM Pulsed Width Modulation PWM pulse wave modulation PWM pulse width modulated PWM pulse width modulation PWM pulse width modulators PWM pulse width-modulation PWM pulse-width modulated PWM pulse-width modulation PWM pulse-width-modulated PWM pulse-width-modulation PWP plastic waste processor PWP polarization wave plate PWP polymerized whey protein PWS public warning service PWV pulse wave velocity PWW post wall waveguide PXR pregnane Xreceptor PXRD Powder X-Ray Diffraction PXRD Powder X-Ray Diffractometry PXRD Powdered X-ray diffraction PZT plumbum zirconate titanate