| Acronym | Meaning |
| CPCCSD | Coupled-perturbed Coupled-cluster (with) Single (and) Double Excitation |
| ARS | Agricultural Research Service (US Dept. Of Agriculture) |
| HASTE | Half-Fourier Acquisition With Single-shot Turbo Spin-echo |
| CMR-CI | Contracted Multireference Configuration Interaction |
| ACATS | Airborne Chromatograph For Atmospheric Trace Species |
| CLP | Cecal Ligation And Puncture |
| EROS | Earth Resources Observation Satellite |
| LEU | Low Enrichment Uranium |
| SAMS | Stratospheric And Mesospheric Sounder |
| RAGS | Risk Assessment Guidelines For Superfund Sites |