| Acronym | Meaning |
| ECP | Effective Core Potential Approxn.(in Electronic-structure Calcn.) |
| APAD | 3-acetylpyridine Adenine Dinucleotidepar |
| MCM | Minichromosome Maintenance |
| F4 | Fourth-order Feenberg (quantum Theory) |
| GDR | German Democratic Republic |
| QPMDA | Quasiparticle Mean Density Approxn. (assocd. With Local-d. Theory) |
| REA | Reactive Arthritis |
| XAS | X-ray Absorption Spectroscopy |
| GOEZS | Global Ocean Euphotic Zone Study |
| AFBR | Anaerobic Fluidized-bed Reactor |