| Acronym | Meaning |
| UNCED | United Nations Conference On Environment And Development |
| DWPF | Defense Waste Processing Facility |
| NCRDS | National Coal Resources Data System |
| CCM | Complex Coordinate Method (in Calcns. On Quantum Tunneling) |
| USMAR | Upflow Static-Media Anaerobic Reactor |
| ECCLS | European Committee For Clinical Laboratory Standards |
| HPGE | High Purity Germanium |
| HSC | Hepatic Stellate Cells |
| CIT | California Institute Of Technology |
| MOVS | Molecular Orbital Valence State |