| Acronym | Meaning |
| PVC | Polyvinyl Chloride |
| IRAS | Infrared Astronomy Satellite |
| SBH | Sequencing By Hybridization |
| OUR | Oxygen Uptake Or Utilization Rate |
| QCI | Quadratic Configuration Interaction |
| TIP | Total Isomerization Process |
| RSMST | Real-space Multiple-scattering Theory (in Electronic Structure) |
| NBI | Neutral Beam Injection |
| HON | Hazardous Organic NESHAP |
| TSI | Trophic State Index |