| Acronym | Meaning |
| RHFT | Relativistic Hartree-Fock Two-channel (for Scattering) |
| HIBS | Heavy Ion Backscattering Spectrometry |
| FDDI | Fiber-Distributed Data Interface |
| PTI | Positive Thermal Ionization (for Mass Spectrometry) |
| UOVMO | Unoccupied Valence-type Mol. Orbital |
| NDP | Net Driving Pressure (in Membrane Reverse Osmosis) |
| ADR | Adverse Drug Reaction |
| LOXJET | Liq. Oxygen Torch System |
| LONEOS | Lowell Observatory Near-Earth-Object Search |
| CIAP | Climate Impact Assessment Program |