| Acronym | Meaning |
| DNO | Delocalized Natural Orbital |
| MBR | Mobil Benzene Reduction [process] |
| BEST | Bare Essentials Of Surface Transfer |
| CEQB | Collinear Exact Quantum (with Adiabatic) Bending (energy) (method For Reactive Scattering) |
| IMB | Information Management Branch |
| MRSD-CI+D | MRSD-CI (with) Davidson Correction |
| DFDL | Distributed-feedback Dye Laser |
| ASEAN | Assocn. Of South-East Asian Nations |
| QSM | Quantum Shell Model |
| AIRDAS | Airborne Infrared Disaster Assessment System |