| Acronym | Meaning |
| MNDO/M | Modified MNDO |
| IVF | In Vitro Fertilization |
| DAC | Derived Air Concentration |
| RKKY | Ruderman-Kittel-Kasuya-Yoshida (indirect Electron Exchange Mechanism) |
| SHRIMP | Sensitive High Mass Resolution Ion Microprobe |
| PMF | Positive Matrix Factorization |
| SPT | Selective Polarization-transfer |
| NAMT | National Advanced Manufacturing Testbed |
| CMDL | Climate Monitoring And Diagnostics Laboratory (NOAA Boulder |
| GIPM | Ground State Inversion Potential Method |