| Acronym | Meaning |
| CAT | Chloramphenicol Acetyltransferase |
| ORD | Office Of Research And Development (USEPA) |
| ERE | Estrogen-responsive Element |
| AFSB | Anaerobic Fluidized Sludge Blanket |
| MAST | Marine Science And Technology Programme |
| ASM | Advanced Scavenging Model (for Air Pollution) |
| DTC | Developmental Test Command [US Army] |
| AHW | Atomic Hydrogen Welding |
| AA | Assistant Administrator |
| AFEAS | Alternative Fluorocarbon Environmental Acceptability Study |