| Acronym | Meaning |
| CH-CI | Core Hole Configuration Interaction |
| HPA | Hybridization Protection Assay |
| MR-MP2 | Multireference Moeller-Plesset For Two-configuration Wave Function |
| ACCCI | American Coke And Coal Chemicals Institute |
| SEDOR | Spin-echo Double Resonance |
| SAGA | Soviet American Gas And Aerosol Experiment |
| EOD | Engineering Operations Division |
| WLM | Working Level Month (for Radiation Exposure) |
| TSI | Trophic State Index |
| BOPF | Basic Oxygen Process Furnace |