| Acronym | Meaning |
| PPFD | Photosynthetic Photon Flux D. |
| VSD | Virtually Safe Dose |
| CLP | Contract Laboratory Program |
| GACT | Granular Activated Carbon Treatment |
| MSUD | Maple Syrup Urine Disease |
| NSS | National Stream Survey (USA) |
| RRC | Regional Response Center |
| MATI | Mass-analyzed Threshold Ionization Spectroscopy |
| POSS | Polyhedral Oligomeric Silsesquioxane |
| CVL | Copper Vapor Laser |