| Acronym | Meaning |
| SANO | Symmetry-adapted Natural Orbital |
| TRM | Thermoremanent Magnetization |
| SODAR | Sound Detection And Ranging (meteorological Instrument) |
| PCFB | Pressurized Circulating Fluidized Bed (gasification Apparatus) |
| INO | Iterative Natural Orbital |
| HSAB | Hard And Soft Acids And Bases |
| FASTMAP | Fast Automatic Shimming Technique By Mapping Along Projections |
| SNS | Separation Network Synthesis (chemical Engineering Design) |
| HEATRT | Heat Rate [EPRI Software] |
| PM3 | Third-parametric Method |