| Acronym | Meaning |
| ICVT | Improved Canonical Variational Theory |
| SLRS | Selective Laser Reactive Sintering |
| IETS | Inelastic Electron Tunneling Spectroscopy |
| NTU | Number Of Transfer Units (in Packed Tower Aeration System) |
| VOHAP | Volatile Organic Hazardous Air Pollutant |
| VAP | Valence Alternation Pair (bonding Configuration Model) |
| ERD | Electron Recoil Detection |
| LUFT | Leaking Underground Fuel Tank |
| MIDI-N | Split-type Contracted GTO Basis Set (n = 1 |
| ELSA | Emergency Level Scale Assessment |