| Acronym | Meaning |
| DZHD | Double-zeta Huzinaga-Dunning (wave Functions) |
| NDDN | National Dry Deposition Network (US EPA) |
| SMC | Small Magellanic Cloud |
| TESS | Triboelectrostatic Separation |
| XRCF | X-ray Calibration Facility |
| HWDMS | Hazardous Waste Data Management System |
| CRC | Chemical Rubber Company |
| UMP2 | Unrestricted Moeller-Plesset 2nd-order (perturbation Theory) |
| CPV | Canine Parvovirus |
| AFF | Aberration Free Focus |