| Acronym | Meaning |
| ISIRS | International Sorption Information Retrieval System |
| IEQ | Indoor Environmental Quality |
| HWDMS | Hazardous Waste Data Management System |
| HFFC | Hartree-Fock Frozen Core |
| IAMAS | International Association Of Meteorological And Atmospheric Sciences |
| IAQP | Indoor Air Quality Program |
| EMA | Effective Mass Approxn. (for Impurity Energy Levels) |
| ISCCP | International Satellite Cloud Climatology Project |
| PAM | Periodic Anderson Model |
| SCOTCH | Spin Coherence Transfer In Chemical Reactions |