| Acronym | Meaning |
| WIC | Washington Information Center |
| TVS | Transient Voltage Suppressor |
| CNO | Constrained Nonorthogonal Orbital (algorithm) |
| ENR | Endogenous Nitrate Respiration |
| CCDW | Coupled-channel Distorted-wave (quantum Method) |
| EIMS | Environmental Information Management System |
| PLD | Programmable Logic Device |
| IDTIMS | Isotope Diln. Thermal Ionization Mass Spectrometry |
| CMI | Cell-mediated Immunity |
| ACPAR | Angular Correlation Of Positron Annihilation Radiation |