| Acronym | Meaning |
| MRL | Minimal Risk Levels |
| RONALD | Rocketborne Optical Neutral Gas Analyzer With Laser Diodes |
| LHDC | Lube Hydrocracking Distillate Catalyst |
| RVB | Resonating Valence Bond (theory Of High-tc Superconductors) |
| PDR | Photon-dominated Region |
| HITRAN | High-Resolution Transmission Molecular Absorption Database |
| ROHS | Restrictions On Hazardous Substances |
| CCTP | Clean Coal Technology Program |
| DLOS | Deep-level Optical Spectroscopy |
| CCAP | Cancer Chromosome Aberration Project |