| Acronym | Meaning |
| CAIR | Comprehensive Assessment Information Rule (USEPA) |
| OTC | Open Tubular Column |
| ECMWF | European Center For Medium Range Weather Forecast |
| ARISE | Advanced Radio Interferometry Between Space And Earth |
| GBF | Gibbs-Bogolyubov-Feynman (variational Principle) |
| AWBERC | Andrew W. Breidenbach Environmental Research Center (US EPA) |
| IEMA | Immunoenzymometric Assay |
| INDOR | Internal Nuclear Double Resonance |
| LEFI | Local Electric Field Instrument |
| STP | Similarity Transformation (based) Perturbation (theory) |