| Acronym | Meaning |
| GHL | Generalized Heitler-London |
| CYCLOPS | Cyclically Ordered Phase Sequence |
| RT | Reverse Transcriptase |
| PARAFAC | Parallel Factor Analysis |
| EETFC | Environmental Effects |
| RPEHMO | Relativistically Parametrized Extended Hueckel MO |
| I-TEF | International Toxicity Equvalency Factor |
| HFET | High Field Effect Transistor |
| WFA | Window Factor Analysis |
| EROS | Earth Resources Observation Satellite |