| Abbreviation | Definition |
|---|---|
| PHC | Petroleum HydroCarbon |
| PHDD | Polyhalogenated Dibenzodioxin |
| PHE | Phenylalanine |
| PHMB | PolyHexaMethyleneBiguanide |
| PHR | Per Hundred Resin |
| PHT | PHThalate |
| PHV | PHoto Voltaic |
| PI | Phosphate Ion |
| PID | Photo Ionization Detector |
| PILP | Polymer-Induced Liquid Precursor |
| PIP | PhosphatidylInositol Phosphate |
| PJCE | Plasma Jet Chemical Etching |
| PJCT | Polish Journal of Chemical Technology |
| pK | Covalent Disassociation Constant |
| PKA | Protein Kinase |
| PL | Photo Luminscence |
| PLA | Poly Lactic Acid |
| PLA | Poly Latic Acid |
| PLA | Polymerized Lactic Acid |
| PLC | PhosphoLipase-C |