| Acronym | Meaning |
| SWICS | Solar Wind Ion Composition Spectrometer |
| GWTR | Ground Water Treatment Rule |
| TOM | Total Organic Matter |
| CCSD | Coupled Cluster With Single And Double Excitation |
| APCE | Air Pollution Control Equipment |
| CMRA | Chemical Migration And Risk Assessment |
| ICOLP | Industry Cooperative For Ozone Layer Protection |
| HTLA | Heat-treatable Low Alloy (steel) |
| SUMO | Small Ubiquitin-related Modifier |
| PTCR | Positive Temperature Coefficient Of Resistance (of Semiconductors) |