| Acronym | Meaning |
| RIS | Radiation-induced Segregation |
| BHGM | Borehole Gravity Meter |
| MSIS | Mass Spectrometer And Incoherent Scatter |
| MAOI | Monoamine Oxidase Inhibitor |
| 2PPE | Two-photon Photoemission |
| HFF | Hellmann-Feynman Force Approximation |
| EMER | Electromagnetic Molecular Electronic Resonance |
| CLC | Coordinated List Of Chemicals |
| CTG | Control Technique Guidelines |
| QCPE | Quantum Chemistry Program Exchange |