| Acronym | Meaning |
| ISIRS | International Sorption Information Retrieval System |
| CINO | Configuration Interaction Natural Orbital |
| CIS | Chemical Information System |
| DTGS | Deuterated Triglycine Sulfate |
| CSML | Chemical Structure Markup Language |
| DOM | Dissolved Organic Matter |
| HAPEMS | Hazardous Air Pollutant Enforcement Management System |
| SASS | Source Assessment Sampling System |
| AMEM | A.D.L. Migration Estimation Model |
| CBOX | Coulomb-Born With No Exchange |