| Acronym | Meaning |
| ESI | Ease-of-separation Index |
| ISEA | International Society For Exposure Analysis |
| UBFF | Urey-Bradley Force Field |
| GM | Geometric Mean |
| TRI-US | Toxic Release Inventory-User Support |
| ACMV | African Cassava Mosaic Virus |
| ORFEUS | Orbiting Retrievable Far And Extreme Ultraviolet Spectrometers |
| MAFIAS | Micro Ammonia Flow Injection Analysis System |
| ATIR | Attenuated Total Reflectance Infrared |
| IIASA | International Institute Of Applied Systems Analysis (near Vienna |