| ABA Poly(Acrylonitrile Butadiene Acrylate) | PAEK Polyaryletherketone |
| ABS Poly(Acrylonitrile Butadiene Styrene) | PAI Polyamide-Imide |
| ACM Poly(Acrylic Acid Ester Rubber) | PAMS Poly(Alpha Methylstyrene) |
| ACS Acrylonitrile-Chlorinated Polyethylene-Styrene Terpolymer | PAN Polyacrylonitrile |
| ACS American Chemical Society | PARA Polyarylamide (polyaramide) |
| AES Poly(Acrylonitrile Ethylene Styrene) | PAS Polyarylsulfone |
| AMMA Poly(Acrylonitrile Methyl Methacrylate) | PASA Polyamide, Semi-Aromatic (Nylon) |
| AN Acrylonitrile | PASU Polyarylsulfone |
| AO Antioxidant | PB Polybutadiene |
| APET Amorphous Polyethylene Terephthlate | PB Polybutene-1 |
| API American Petroleum Institute | PBGA Plastic Ball Grid Array |
| ARP Poly(Arylterephthalate) Copolyester | PBI Polybenzimidazole |
| AS Antistatic | PBT Polybutylene Terephthalate |
| ASA Poly(Acrylic Styrene Acrylonitrile) | PC Polycarbonate |
| ASTM American Society for Testing and Materials | PCB Printed Circuit Board |
| BDMA Benzyl Dimethyl Amine (Epoxy Cure Accelerator) | PCP Post-Consumer Plastic |
| BGE Butyl Glycidyl Ether | PCR Post-Consumer Resin |
| BIIR Bromobutyl Rubber | PCT Polycyclohexylenedimethylene Terephthalate |
| BMC Bulk Molding Compound | PCTFE Polychlorortrifluoroethylene (aka Kel-F) |
| BMI Bismaleimide | PCTG Glycol-Modified PCT |
| BOPP Biaxially Oriented Polypropylene (Film) | PCU Polycarbonate Urethane |
| BR Polybutadiene Rubber | PDAP Poly(Diallyl Phthalate) |
| CA Cellulose Acetate | PDSM polydimethylsiloxane (Silicone) |
| CAB Cellulose Acetate Butyrate | PE Polyethylene |
| CAP Cellulose Acetate Propionate | PEBA Polyether Block Amide |
| CF Cresol Formaldehyde | PEEK Polyetheretherketone |
| CFR Code of Federal Regulations | PEF Process Engineered Fuel |
| CGE Cresol Glycidyl Ether | PEG Polyethylene Glycol |
| CHDM Cyclohexanedimethanol | PEI Polyetherimide (aka Ultem) |
| CIIR Chlorobutyl Rubber | PEK Polyetherketone |
| CM Chlorinated Polyethylene Rubber | PEKEKK Polyetherketoneetherketoneketone |
| CM Compression Molded | PEKK Polyetherketoneketone |
| CMC Carboxymethyl Cellulose | PEN Polyethylene Naphthalate |
| CN Cellulose Nitrate | PEO Poly(Ethylene Oxide) |
| CO Epichlorohydrin Rubber (Homopolymer) | PEOX Poly(Ethylene Oxide) |
| COF Coefficient of Friction | PES Polyethersulfone |
| CP Cellulose Propionate | PESU Polyethersulfone |
| CPE Chlorinated Polyethylene | PET Polyethylene Terephthalate |
| CPVC Chlorinated Polyvinyl Chloride | PETG PET Modified with CHDM |
| CR Polychloroprene Rubber | PEX Cross-linked Polyethylene |
| CS Casein | PF Phenol Formaldehyde (Phenolic) |
| CSA Canadian Standards Associates | PFA Perfluoroalkoxy |
| CSM Chlorosulfonated Polyethylene Rubber | PFPE Polyperfluoropolyether |
| CTE Coefficient of Thermal Expansion | PI Polyimide |
| CTFE Chlorortrifluoroethylene | PIB Polyisobutylene |
| CTI Comparative Tracking Index | PIR Polyisocyanurate Foam |
| CVD Chemical Vapor Deposition | PISU Polyimidesulfone |
| DAM Dry As Molded (often applied to nylon) | PMMA Polymethylmethacrylate (aka acrylic, plexiglass) |
| DAP Diallyl Phthalate | PMP Polymethylpentene |
| DDS Diaminodiphenyl Sulfone (Epoxy Cure Agent) | PNR Polynorborane Rubber |
| DGEBA Diglycidyl Ether of Bisphenol A | PO Polyolefin |
| DIN Deutches Institut für Normung | POB Poly(p-Oxybenzoate) |
| DTUL Deflection Temperature Under Load | POM Polyoxymethylene (Acetal) |
| EAA Ethylene/Acrylic Acid Copolymer | POP Point of Purchase (Marketing Displays) |
| EBAC Poly(Ethylene Butyl Acrylate) | PP Polypropylene |
| EC Ethyl Cellulose | PPA Polyphthalamide |
| ECN Epoxy Cresol Novolac | PPE Polyphenylene Ether |
| ECO Epichlorohydrin Rubber (Ethylene Oxide Copolymer) | PPF Phenol-Furfural |
| ECTFE Poly(Ethylene Chlorotrifluoroethylene) (aka Halar) | PPG Polypropylene Glycol |
| EEA Poly(Ethylene-Ethyl Acrylate) | PPO Polyphenylene Oxide (aka Noryl) |
| EEW Epoxy Equivalent Weight (Also called WPE) | PPOX Polypropylene Oxide |
| EMAAA Ethylene Acid Terpolymer | PPS Polyphenylene Sulfide ( aka Techtron, Ryton) |
| EMAC Poly(Ethylene Methyl Acrylate) | PPSU Polyphenylsulfone |
| EMCM Ethylene Methyl Acrylate Cyclohexene Methyl Acrylate | PRF Plastics Recovery Facility |
| EMI Electromagnetic Interference | PS Polystyrene |
| EP Epoxy; Epoxide | PSU Polysulfone |
| EPA Environmental Protection Agency (US Government) | PTFE Polytetrafluoroethylene (aka Teflon) |
| EPDM Ethylene Propylene Terpolymer Rubber | PTMG Polytetramethylene Glycol |
| EPM Ethylene Propylene Copolymer | PTT Polytrimethylene Terephthalate |
| EPN Epoxy Phenol Novolac | PU Polyurethene |
| EPS Expanded Polystyrene ESCR Environmental Stress Cracking Resistance | PUR Polyurethene |
| ETFE Poly(Ethylene Tetrafluoroethylene) (aka Tefzel) | PVAC Poly(Vinyl Acetate) |
| ETPU Engineering Thermoplastic Polyurethane | PVAL Poly(Vinyl Alcohol) |
| EVA Ethylene Vinyl Acetate Copolymer | PVB Poly(Vinyl Butyral) |
| EVAC Ethylene-Vinyl Acetate Copolymer | PVC Polyvinyl Chloride |
| EVAL Poly(Ethylene-Vinyl Alcohol) | PVCA Poly(Vinyl Chloride-Acetate) |
| EVOH Poly(Ethylene Vinyl Alcohol) | PVDC Polyvinylidene Chloride |
| FDA Food and Drug Administration (US Government) | PVDF Polyvinylidene Fluoride (aka Kynar, Symalit) |
| FEP Fluorinated Ethylene Propylene | PVFM Poly(Vinyl Formal) |
| FF Furan Formaldehyde | PVK Polvinylcarbazole |
| FMQ Fluorosilicone Rubber | PVOH Polyvinyl Alcohol |
| FPM Fluorocarbon Rubber | PVP Polyvinylpyrrolidone |
| FPVC Flexible Polyvinyl Chloride | PZ Polyphosphazene Rubber |
| FR Flame Retardant | RH Relative Humidity |
| FVMQ Fluorosilicone Rubber | RIM Reaction Injection Molding |
| FZ Fluorinated Polyphosphazene Rubber | RPVC Rigid Polyvinyl Chloride |
| GFR Glass Fiber Reinforced | RRIM Reinforced Reaction Injection Molding |
| GP General Purpose | RTI Relative Thermal Index (UL test) |
| GPO Propylene Oxide Rubber | RTPU Rigid Thermoplastic Polyurethane |
| GPPS General Purpose Polystyrene | RTV Room Temperature Vulcanizing (Silicone) |
| HAI High Amp Arc Ignition | SAN Poly(Styrene Acrylonitrile) |
| HALS Hindered Amine Light Stabilizer | SB Styrene-Butadiene |
| HDPE High Density Polyethylene | SBC Styrene-Butadiene Copolymer |
| HDT Heat Deflection Temperature or Heat Distortion Temperature | SBS Poly(Styrene Butadiene Styrene) |
| HFP Hexafluoropropylene | SEBS Poly(Styrene-Ethylene-Butadiene-Styrene) Elastomer |
| HIPS High Impact Polystyrene | SI Silicone |
| HNBR Hydrogenated Nitrile Rubber (Acrylonitrile-Butadiene Rubber) | SI System International (a subset of metric units) |
| HRE Rockwell E Hardness Number | SIS Poly(Styrene-Isoprene-Styrene) Elastomer |
| HRM Rockwell M Hardness Number | SMA Poly(Styrene Maleic Anhydride) |
| HRR Rockwell R Hardness Number | SMC Sheet Molding Compound |
| HVAR High Voltage Arc Resistance to Ignition | SMMA Styrene Methyl Methacrylate Copolymer |
| HVTR High Voltage Tracking Rate | SMS Styrene-a-Methylstyrene |
| HWI Hot Wire Ignition | SPS Syndiotactic Polystyrene |
| IBS Interactive Blowing System | SPU Segmented Polyurethane |
| IIR Butyl Rubber | TAIC Triallyl Isocyanurate |
| IM Injection Molded | TEEE Ether Ester Block Copolymer (Thermoplastic Elastomer) |
| IMR Internal Mold Release | TEEE Thermoplastic Elastomer Ether Ester Block Copolymer |
| ISO International Standards Organization | TEO Olefinic Thermoplastic Elastomer |
| LCP Liquid Crystal Polymer | TES Thermoplastic Styrenic Elastomer |
| LDPE Low Density Polyethylene | TFE Polytetrafluoroethylene (aka PTFE, Teflon) |
| LLDPE Linear Low Density Polyethylene | TM Transfer Molded |
| LMDPE Linear Medium Density Polyethylene | TP Thermoplastic |
| MD Metal Deactivator | TPE Thermoplastic Elastomer |
| MDPE Medium Density Polyethylene | TPI Thermoplastic Polyimide |
| MEKP Methyl Ethyl Ketone Peroxide (Thermoset Curing Agent) | TPO Thermoplastic Polyolefin (often applied to elastomers) |
| MF Melamine-Formaldehyde | TPU Thermoplastic Polyurethene (often applied to elastomers) |
| MFD Microfloppy Diskettes | TPUR Thermoplastic Polyurethene (often applied to elastomers) |
| MFI Melt Flow Index | TPV Thermoplastic Vulcanizate |
| MVTR Moisture Vapor Transmission Rate | TS Thermoset |
| MWD Molecular Weight Distribution | TYS Tensile Yield Strength |
| NASA National Aeronautics and Space Administration (US) | UF Urea Formaldehyde |
| NB No Break (Applied to Impact Test Results) | UHMW Ultra High Molecular Weight (often applied to polyethylene) |
| NBR Nitrile Rubber (Acrylonitrile-Butadiene Rubber) | UL Underwriters Laboratory |
| NHFR Non-Halogen Flame Retardant | ULDPE Ultra Low Density Polyethylene |
| NHT High Temperature Nylon | UP Unsaturated Polyester (Thermoset) |
| NSF National Sanitation Foundation (nonregulatory agency) | USDA United States Department of Agriculture |
| OB Optical Brightener | UTS Ultimate Tensile Strength |
| ODP Ozone Depletion Potential | UV Ultraviolet |
| OEM Original Equipment Manufacturer | VCE Poly(Vinyl Chloride-Ethylene) |
| OPP Oriented Polypropylene (Film) | VCMA Poly(Vinyl Chloride-Methyl Acrylate) |
| OPS Oriented Polystyrene (Film) | VCVAC Poly(Vinyl Chloride-Vinyl Acrylate) |
| OSHA Occupation Safety and Health Administration (US Government) | VCVDC Poly(Vinyl Chloride-Vinylidene Chloride) |
| PA Polyacrylate | VHMW Very High Molecular Weight (often applied to polyethylene) |
| PA Polyamide (Nylon) | WPE Weight per Epoxide (also called EEW) |
| PAEK Polyarylether | XLPE Cross-linked Polyethylene |