| Acronym | Meaning |
| EFTC | European Fluorocarbon Technical Committee |
| CGRO | Compton Gamma-Ray Observatory |
| BRM | Biological Response Modifier |
| PCILOCC | PCILO For Crystal Calculations |
| APT | Atomic Polar Tensor (in Ir Spectra Calcn.) |
| VIF | Valency-point Interaction Formula (in Graph Theory With At. And Mol. Orbitals) |
| NDBEPR | Nitrification-denitrification Biological Excess Phosphorus Removal |
| SWPPP | Stormwater Pollution Prevention Plan |
| HASE | Hydrophobically Modified Alkali-swellable Emulsion |
| MORE | Micro-optical Ring Electrode |