| Acronym | Meaning |
| ONCV | Orthonormality Constrained Variation (quantum Method) |
| FIIAA | Flow Injection Immunoaffinity Analysis |
| SPDT | Single-pole Double-throw (switch) |
| BAGI | Backscatter Absorption Gas Imaging |
| UF | Ultrafiltration (water Treatment) |
| NAPBN | National Air Pollution Background Network |
| SLAIS | SAW Liquid Analyzing And Identifying System |
| FK | Fish Kill (file Within STORET) |
| MCZDO | Many Center Zero Differential Overlap |
| QLUC | Quasimolecular Large Unit Cell (model For Electronic-structure Calcns. On Solids) |