| Acronym | Meaning |
| IRED | Ion Radiation-enhanced Diffusion |
| MWH | Mulliken-Wolfsberg-Helmholz (molecular Orbital Method) |
| CTTS | Classical T Tauri Star |
| HMI | Hornbeck-Molnar Ionization (homonuclear Associative Ionization In At. Collisions) |
| HNSCC | Head And Neck Squamous Cell Carcinoma |
| IGOSS | Integrated Global Ocean Services System |
| ICRMS | Ion Cyclotron Resonance Mass Spectrometry |
| LWR | Locally Weighted Regression |
| EGTA | Ethylene Glycol Bis(2-aminoethyl Ether)-N |
| UTAO | Undistorted Traveling Atomic Orbital |