| Acronym | Meaning |
| QCA | Quasichemical Approxn. (in Calcns. On Semiconductors) |
| DAP | Distributed Array Processor |
| HIT | Heterojunction With Intrinsic Thin Layer (photovoltaic Cell; Solar Cell) |
| LOICZ | Land-Ocean Interactions In The Coastal Zone |
| WQA | Water Quality Association |
| CBF | Correlated Basis Function |
| TAPS | Tris-aminopropanesulfonic Acid |
| NCRPM | National Council On Radiation Protection And Measurements |
| NETL | National Energy Technology Laboratory |
| COTF | Classroom Of The Future |