| Acronym | Meaning |
| CEEES | Committee Of European Environmental Engineering Societies |
| INDOR | Internal Nuclear Double Resonance |
| ECFS | Hot And Cold Potable Water (French; L'eau Chaude Et Froide Sanitaire) [a Class Of Pipe Application] |
| AFF | Aberration Free Focus |
| WRDC | Wright Research And Development Center |
| NSR | New Source Review |
| MMEF | Maximum Mid-expiratory Flow (lung Function) |
| STBF | Slater-type Basis Function |
| EA | Environmental Assessment |
| MCPI | Monte Carlo Path Integration |