Science, Tech, Math › Science Chemistry Abbreviations Starting With the Letter P Share Flipboard Email Print Science Picture Co/Collection Mix:Subjects/Getty Images Science Chemistry Abbreviations & Acronyms Basics Chemical Laws Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Activities for Kids Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated February 28, 2019 Chemistry abbreviations and acronyms are common in all fields of science. This collection offers common abbreviations and acronyms beginning with the letter P used in chemistry and chemical engineering. P - PetaP - Phosphorusp - picoP - PressureP - ProtonPA - Phosphatidic AcidPa - PascalPa - ProtactiniumPA - Proton affinityPA # - PolyAmide polymer numberPAA - PolyAcrylic AcidPABA - ParaAminoBenzoic AcidPAC - Pharmaceutically Active CompoundPAC - Polycyclic Aromatic ContentPAC - Powdered Activated CarbonPAEK - PolyaryletherketonePAGE - PolyAcrylamide Gel ElectrophoresisPAH - Polycyclic Aromatic HydrocarbonPAI - PolyAmide ImidePAO - PolyAlphaOlefinPASA - PolyAmide, Semi-AromaticPb - LeadPB - PolyButylenePBB - PolyBrominated BiphenylPBD - PolyButaDienePBI - PolyBenzImidazolePBN - PolyButylene NaphthalatePBS - Phosphate Buffered SalinePBT - PolyButylene TerephthalatePC - PolyCarbonatePC - Pyruvate CarboxylasePCA - Pyrrolidone Carboxylic AcidPCC - Pyridine Chloro ChromatePCE - TetrachloroethylenePCR - Polymerase chain reactionPCV - Pressure control valvePd - PalladiumPD - Positive displacementPD - Potential differencePE - PhycoErythrinPE - PolyethylenePE - Potential energyPEA - PolyEster AminePEEK - PolyEtherEtherKetonePEG - PolyEthylene GlycolPEK - Poly Ether KetonePEL - Permissible exposure limitPERC - TetrachloroethylenePES - PolyEtherSulfonePET - Polyethylene TerephthalatePETP - Polyethylene terephthalatePEX - Cross-linked PolyEthylenePFC - Perfluorocarbonpg - picogramPG - Propylene GlycolPG - ProstaglandinPGA - 3-PhosphoGlyceric AcidPGA - PolyGlutamic AcidPGE - Platinum group elementsPGM - Platinum group metalspH - measurement of H+ ions in aqueous solutionPH - Phenol functional groupPHA - PolyHydroxyAlkanoatePHB - PolyHydroxyButyratePHC - Petroleum HydroCarbonPHMB - PolyHexaMethyleneBiguanidePHT - PHThalatePI - Phosphate IonPI - PolyImidePIB - PolyIsoButylenepK - Measurement of the dissociation constantPLA - Polymerized Lactic AcidPLC - PhosphoLipase-CPM3 - Parameterized Model number 3PM10 - Particulates smaller than 10 μm.PM - Particulate MatterPM - Photo Multiplierpm - picometerPM - Plasma MembranePM - Powder MetallurgyPm - PromethiumPMA - PhosphoMolybdic AcidPMA - PolyMethyl AcrylatePMID - PubMed IDentifierPMMA - PolyMethylMethAcrylatePMO - PolyMethylene OxidePNPA - PolyNucleotide Phosphorylase APNPB - PolyNucleotide Phosphorylase BPo - PoloniumPOC - Polar organic contaminantpOH - Measurement of OH- ions in aqueous solutionPOL - Petroleum, oils, and lubricantsPOP - Persistent organic pollutantPORC - PorcelainPPA -PhenylPropanolAminePPA - PolyPhthalAmidePPB - Parts per billionPPM - Parts per millionPPO - PolyPhenylene OxidePPS - PolyPhenylene SulfidePPT - Parts per trillionPPT - PolyPyrimidine TractPPT - PrecipitatePr - PraseodymiumPRV - Pressure relief valvePSI - Pounds per square inchPSV - Pressure safety valvePt - PlatinumPTFE - PolyTetraFluoroEthylenePu - PlutoniumPU - PolyUrethanePV - Parity ViolationPV - Pressure VolumePVC - PolyVinyl ChloridePVT - Pressure, volume, temperaturePXY - Para-XYlene