| Acronym | Meaning |
| BCA | Binary-collision Approximation |
| RCR | Recrystallization Controlled Rolling |
| MEPC | Marine Environment Protection Committee |
| PWRI | Public Works Research Institute (Japan) |
| ANSI | American National Standards Institute |
| CI | Configuration Interaction |
| NASO | Nasmyth Adaptive Optics System |
| CART | Classification And Regression Tree (method In Statistical Analysis) |
| ESIG | European Solvents Industry Group |
| BKCM | Burkhardt-Konya-Coulson-March (for Electron Momentum Densities) |