| Acronym | Meaning |
| PAK | P21-Activated Kinase |
| CMF | Crossflow Microfiltration |
| PAPP-A | Pregnancy-associated Plasma Protein A |
| APSG | Antisymmetrized Product Of Strongly Orthogonal Geminals (variant Of Multiconfiguration Self-consistent Field Method) |
| ORBIT | On-line Retrieval Of Bibliographic Information Timesharing |
| POC | Purgeable Organic Carbon |
| FC | Frozen Core (approxn. For Electron-atom Scattering Calcns.) |
| LAER | Lowest Achievable Emission Rate |
| POP | Persistent Organic Pollutant |
| KT | Koopmans Theorem |