| Acronym | Meaning |
| HFSLM | Hollow-fiber Supported Liquid Membrane |
| ECETOC | European Center For Ecotoxicology And Toxicology Of Chemicals |
| CSACM | Canonical Statistical Adiabatic Channel Model (in Reactions) |
| EMT | Effective-medium Theory (of Bonding In Metallic Systems) |
| AFV | Alternatively Fueled Vehicle |
| BOM | Bond Orbital Model |
| SNAP | Significant New Alternative Policy |
| AFSB | Anaerobic Fluidized Sludge Blanket |
| MRINDO/S | Modified Rydberg Intermediate Neglect Of Differential Overlap/spectral (or Screening) |
| OSF | Odor Safety Factor |