| Acronym | Meaning |
| DIN | Dissolved Inorganic Nitrogen |
| POI | Plagioclase-olivine Inclusions |
| TROLS | Terrestrial And Riparian Organisms |
| ENAC | Energetic Neutral Atom Camera |
| ICF-CI | Interacting Correlated Fragment-CI (wave Function) (see Also SA-MCSCF) |
| WRIB | Waste Reduction Information Bibliography (component Of WRAS) |
| STAIRS | Storage And Information Retrieval System |
| ENDOR | Electron Nuclear Double Resonance |
| PYS | Partial Yield Spectroscopy |
| LNGFR | Low-affinity Nerve Growth Factor Receptor |