| Acronym | Meaning |
| PRB | Permeable Reactive Barrier |
| SQM | Scaled Quantum Mechanics (in Ab Initio Calcns.) |
| PCR | Polymerase Chain Reaction |
| ERIS | Electrostatic Reflex Ion Source |
| IDF | International Dairy Federation |
| PCMCIA | Personal Computer Memory Card International Association |
| TRACE | Transport And Atmospheric Chemistry Near The Equator |
| COHMAP | Cooperative Holocene Mapping Project |
| CEFIC | European Chemical Industry Association |
| IASH | International Association On The Stability And Handling Of Liquid Fuels |