| Acronym | Meaning |
| MOLIERE (V5) | Microwave Observation LIne Estn. And Retrieval |
| VOA | Variable Optical Attenuator |
| HWC | Hazardous Waste Combustor |
| RECA | Regional Energy Convergence Approxn. (in Total Energies Calcns.) |
| ICRF | Ion Cyclotron Range Of Frequencies |
| VBM | Valence-band Model (in Electronic Structure Calcns.) |
| QA | Quality Assurance |
| TOM | Transition Operator Method |
| AGGG | Advisory Group On Greenhouse Gases |
| CAEC | Center For Analysis Of Environmental Change |