| Acronym | Meaning |
| LEMA | Least Error Matrix Analysis |
| ARNT | Aryl Hydrocarbon Receptor Nuclear Translocator |
| TCF | Totally Chlorine-free [in Pulp Industry] |
| AEY | Auger Electron Yield |
| AID | Agency For International Development |
| MLC | Myosin Light Chain |
| HIT | Heterojunction With Intrinsic Thin Layer (photovoltaic Cell; Solar Cell) |
| ROHF | Restricted Open-shell Hartree-Fock |
| WMAP | Wilkinson Microwave Anisotropy Probe |
| APAES | Appearance Potential Auger Electron Spectroscopy |