| Acronym | Meaning |
| RECLAIM | Regional Clean Air Incentives Market |
| FAO | Food And Agriculture Organization |
| VRDDO | Variable Retention Of Diatomic Differential Overlap |
| WSTCM | Watson-sphere Terminated Cluster Model (in Electronic-structure Calcns. On Crystal Defects) |
| ACNFS | Advisory Committee On Nuclear Facility Safety |
| BFU-E | Burst-forming Unit-erythroid |
| TPSA | Total Prostate Specific Antigen |
| ANO | Atomic Natural Orbital |
| DPP | Differential-pulse Polarography |
| VCCPB | Variable-charge Coulomb-projected Born (approxn. For Electron-atom Scattering) |