| Acronym | Meaning |
| ND | Nitrification Denitrification |
| RE | Recoupled States (in Orbiting Resonances Calcns. In Atom-mol. Inelastic Scattering) |
| MSP | Monosodium Phosphate |
| UBD | Under-bath Decarburization |
| GSA | Generator-state Approach (in Many-body Quantum Theory) |
| GDC | Global Drifter Center (of WOCE Data System) |
| LEI | Laser Enhanced Ionization |
| CART | Cloud And Radiation Testbed |
| FLAPW | Full-potential Linearized Augmented Plane Wave |
| CTR | Calcitonin Receptor |