| Acronym | Meaning |
| CC-PV(D,T,Q) | Correlation-consistent Polarized (double, Triple, Or Quadruple)-split Valence Basis Set |
| CHA | Chemical Hamiltonian Approach |
| STERAO | Stratosphere-Troposphere Experiments: Radiation |
| STEAMER | Slow Turning Echo Amplitude Modulation And Echo Reduction |
| ECEC | European Center For Environmental Communication |
| ASMC | Aortic Smooth Muscle Cell |
| SWR | Standing Wave Ratio |
| RIP | RCRA Implementation Plan |
| REAPDOR | Rotational-echo Adiabatic-passage Double-resonance |
| RCIOSA | Reactive Classical-infinite-order-sudden Approxn. |