| Acronym | Meaning |
| TIME | Transferred Ionized Molten Energy Process (for Metal Arc Welding) |
| BCGA | British Compressed Gases Association |
| PT-MVD | Perturbation Theory (with) Mass-velocity And Darwin (operators) |
| ADDC | Ammonium Diethyldithiocarbamate |
| GCAM | Global Change Assessment Modeling |
| OBK | Oppenheimer-Brinkman-Kramers (approxn. In Atom-ion Electron-exchange Calcns.) |
| PACVD | Plasma-assisted Chemical Vapor Deposition |
| UNSCEAR | United Nations Scientific Committee On The Effects Of Atomic Radiation |
| WGS | Water Gas Shift Reaction |
| FBA | Fluidized Bed Afterburner |