| Acronym | Meaning |
| HAA | Haloacetic Acid |
| E-CATS | Electronic Catalog System |
| PAM | Photolabile Attachment Molecules |
| EWPCA | European Water Pollution Control Association |
| RXTE | Rossi X-ray Timing Explorer |
| MIR | Maximum Individual Risk |
| ALEPH | Apparatus For LEP PHysics |
| MASER | Microwave Amplification By Stimulated Emission Of Radiation |
| ECHO | European Community Host Organization |
| PCR | Polymerase Chain Reaction |