| Acronym | Meaning |
| CGTB | Cellular And Genetic Toxicology Branch |
| PTS | Phosphotransferase System |
| DBF | Dibutyl Fumarate |
| ASCA | Automatic Subject Citation Alert |
| ORD | Office Of Research And Development (USEPA) |
| N-BOD | Nitrogenous Biochemical Oxygen Demand |
| HBJ | Hougen-Bunker-Johns (Hamiltonian For Mol. Calcns.) |
| MSA | Many-trajectory Semiclassical Approxn. (in At.-collision Theory) |
| ESPT | Electron Spin Polarization Transfer |
| HEDS | Human Exploration And Development Of Space |