| Acronym | Meaning |
| BHRA | British Hydromechanics Research Association |
| HEK | Human Embryonic Kidney |
| APNO | Atomic Pair Natural Orbital |
| MCAO | Middle Cerebral Artery Occlusion |
| STEAMER | Slow Turning Echo Amplitude Modulation And Echo Reduction |
| MNDO-HE | Modified Neglect Of Diatomic Overlap-half Electron |
| BLDSC | British Library Document Supply Centre |
| SIMS | Surface Impoundment Modeling System |
| HAZCOM | Hazardous Communication Plan |
| IAQ | Indoor Air Quality |