| Acronym | Meaning |
| BNF | Biological Nitrogen Fixation |
| TRAP | Tartrate-resistant Acid Phosphatase |
| IE | Ionization Energy |
| EGTA | Ethylene Glycol Bis(2-aminoethyl Ether)-N |
| NHRL | Northern Hemisphere Reference Line |
| HAPS | Hazardous Air Pollutants |
| SMM | Spin Matrix Mapping |
| IMG | Interferometric Monitor For Greenhouse Gases |
| AVLIS | Atomic Vapor Laser Isotope Separation |
| ISC | Initial Safe Concentration |