| Acronym | Meaning |
| CS | Coupled-states (or Centrifugal Sudden) Approximation |
| CN | Cellulose Nitrate |
| RIOSA | Reactive Infinite-order Sudden Approxn. |
| CINDO | Closed Shell Intermediate Neglect Of Overlap Method |
| SEPAR | Surfaces Enhanced For Photolabile Attachment And Release |
| NSDWR | National Secondary Drinking Water Regulations |
| IACE | Immunoaffinity Capillary Electrophoresis |
| NEDT | Noise Equivalent Delta T |
| ZDDO | Zero Diatomic Differential Overlap |
| WRITE | Waste Reduction Innovative Technology Evaluation (US EPA) |