| Acronym | Meaning |
| OMB | Office Of Management And Budget |
| WOUDC | World Ozone And UV Data Center |
| HWSFC | Hazardous Waste Superfund Collection |
| AVS | Acid Volatile Sulfide |
| TIE | Toxicity Identification Evaluation |
| TCA | Traveling-cluster Approximation (a Generalization Of CPA For Electronic-structure Of Alloys) |
| HRMS | High Resolution Microwave Survey |
| MIOSA | Modified (rotational) Infinite Order Sudden Approxn. |
| OTEC | Ocean Thermal Energy Conversion |
| HECD | Hot Electron Capture Dissociation |