| Acronym | Meaning |
| RRHO | Rigid Rotor-harmonic Oscillator (approxn.) |
| CBS-FCI | Complete Basis Set-full Configuration Interaction |
| CND | Circumnuclear Disk |
| CPMP | Committee For Proprietary Medical Products |
| HPS | High Pressure Plasma Spraying |
| ACRR | Annular Core Research Reactor |
| NPTN | National Pesticide Telecommunications Network |
| IIRF | Intergalactic IR Radiation Field |
| ODFS | Optimized Dirac-Fock-Slater |
| FLC | Ferroelec. Liq. Crystal |