| Acronym | Meaning |
| WRC | Water Resources Council |
| AEE | Adverse Environmental Effect |
| BFAF | Beamformer Antialiasing Filter |
| KT | Koopmans Theorem |
| PHRED | Public Health Risk Evaluation Data |
| RCS | Reaction Control System |
| PTA | Packed Tower Aeration |
| RICE | UK Regular Interlaboratory Counting Exchange (for Asbestos Analysis) |
| PAM | Photolabile Attachment Molecules |
| QSRR | Quantitative Structure-retention Relationships |