| Acronym | Meaning |
| DOI | Department Of The Interior |
| CEPS | Chemically Enhanced Primary Sedimentation |
| RPC | Reversed-phase Chromatography |
| NTD | Neutron Transmutation Doping |
| NTD | Nuclear Track Detector |
| RFGE | Rotating-field Gel Electrophoresis |
| HWSFC | Hazardous Waste Superfund Collection |
| MEDLARS | Medical Literature Analysis And Retrieval System (NLM) |
| PO | Projection Operator |
| ECP | Effective Core Potential Approxn.(in Electronic-structure Calcn.) |