| Acronym | Meaning |
| APUHF | Approximately Projected Unrestricted Hartree-Fock |
| RMCL | Recommended Maximum Contaminant Level |
| ITRS | International Technology Roadmap For Semiconductors |
| OLPA | Orbital Local Plasma Approxn. (in Stopping Power Calcn. For Ions By Films) |
| SLI | Somatic Liver Index |
| TWC | Three-Way Catalyst(s) |
| USTR | US Transuranium Registry |
| AS | Auger Spectroscopy |
| RODAC | Regional Ocean Dumping Advisory Committee |
| PMAMS | Patterned Multi-array |