| Acronym | Meaning |
| IMOMO | Integrated Molecular Orbital And Molecular Orbital |
| TOD | Total Oxygen Demand |
| OSW | Office Of Solid Waste (US EPA) |
| SIMS | Surface Impoundment Modeling System |
| FOS | First-order Sudden |
| IILE | Ion-induced Light Emission |
| DNAPL | Dense Nonaqueous Phase Liquid |
| ASKA | Analog Sensitive Kinase Allele |
| PIII | Plasma Immersion Ion Implantation |
| CISA | Continuum Intermediate-state Approxn. (for Scattering) |