| Acronym | Meaning |
| HEUR | Hydrophobe Modified Ethoxylated Urethane [polymer] |
| LOCI | Luminescence Oxygen Channeling Immunoassay |
| MOFAT | Multi Phase Flow And Transport |
| NISTO | Non-integer Slater-type Orbital |
| FIM | Forced Impulse Method (in Atom Ion-impact Ionization) |
| QRF | Quadratic Response Function (a Quantum Propagator) |
| PSPC | Position Sensitive Proportional Counter |
| RPD | Relative Percent Difference |
| FTD | Flame Thermionic Detector (gas Chromatography) |
| TDC | Top Dead Center |