| Acronym | Meaning |
| SP | Surface Potential |
| OB/OD | Open Burn/open Detonation |
| NDA | New Drug Application |
| MGMT | O6-methylguanine-DNA Methyltransferase |
| VPAM | Variable Phase Amplitude Method (for Electron-atom Scattering) |
| PEC | Predicted Environmental Concentration |
| APAF | Apoptosis Protease Activating Factor |
| IRAK | Interleukin 1 Receptor-associated Kinase |
| PBG | Photonic Band Gap |
| OAO | Orthogonalized Atomic Orbital |