| Acronym | Meaning |
| WSD | Water Saturation Deficit |
| ECNIMS | Electron Capture Negative Ionization Mass Spectrometry |
| INDO | Intermediate Neglect Of Differential Overlap |
| EVE | Ethyl Vinyl Ether |
| AVCC | Average Carbonaceous Chondrites |
| TELD | Transferred-electron Logic Device |
| ETS | External Transcribed Spacer |
| ICR | Intelligent Optical Character Recognition |
| ROA | Raman Optical Activity |
| OVGF | Outer-valence Green Function (for Ionization-energy Calcns.) |