| Acronym | Meaning |
| NDPD | National Data Processing Division |
| TROLL | Transmitter And Receiver Of Laser Light |
| CTF | Common Translation Factor (for Ion-atom Inelastic Collisions) |
| PMP | Project Management Plan |
| SCO | Self-consistent Orbital |
| HEGL | High-energy Gas Laser |
| CHF-PT-EB | Coupled Hartree-Fock-perturbation Theory-extended Basis |
| RCHF | Relaxed-core Hartree-Fock (approxn. In Calcns. On Mol. K-shell Excitation Spectra) |
| OASLM | Optically Addressed Spatial Light Modulator |
| OTS | Office Of Toxic Substances (USEPA) |