| Acronym | Meaning |
| ASGP | Aerobic Suspended Growth Process |
| RSD | Risk-specific Dose |
| CISS | Chromosome In Situ Suppression |
| GAPT | Generalized Atomic Polar Tensor |
| VA-HOMO | Vibrationally Active HOMO |
| SXNO | Singly Excited Natural Orbital |
| PAEP | Photovoltaic Array Environmental Protection Program |
| CAB | Combination Of Atomic Boxes (mo Method) |
| CTF | Common Translation Factor (for Ion-atom Inelastic Collisions) |
| FCG | Fatigue Crack Growth |