| Acronym | Meaning |
| PSCI | Partitioned (orbital Hessian) Super-configuration Interaction |
| ASB | Aerobic Stabilization Basin |
| TNOA | Target Natural Orbital Approximation |
| PDI | Polarization-division Interferometry |
| CCI | Crevice Corrosion Index |
| SIS | Safety Injection System |
| MWI | Medical Waste Incinerator(s) |
| AFGL | Air Force Geophysics Laboratory |
| INN | International Nonproprietary Names (for Drugs) |
| LTTS | Low-Temperature Thermal Separation (for Waste Soil Treatment) |