| Acronym | Meaning |
| CHEMTREC | Chemical Transportation Emergency Center |
| PTA | Packed Tower Aeration |
| HEIR | High Energy Ion Recoil |
| NMDR | Nuclear Magnetic Double Resonance |
| DHF | Derivative Hartree-Fock (quantum Theory In Calcns. On Mols.) |
| CAA | Clean Air Act Of 1970 |
| MIIT | Materials Interface Interactions Test |
| ACC | Approximate Coupled Cluster |
| AMDQW | Asymmetric Modulation Doped Quantum Well |
| P-A TEST | Presence-absence Test |