| Acronym | Meaning |
| CSCF | Complex Self-consistent Field |
| OSWER | Office Of Solid Waste And Emergency Response (USEPA) |
| ZCC | Zero Core Contribution (model For Photodetachment Calcns.) |
| BAL | Blood Alcohol Level |
| NPV | Net Present Value {economics} |
| TEDS | Timed Exposure Diffusive Sampler (for Air Pollution) |
| CAT | Chloramphenicol Acetyltransferase |
| LET | Linear Energy Transfer (in Spacecraft Power Systems) |
| CHF | Coulomb Hartree-Fock |
| 2MASS | Two Micron All-Sky Survey |