| Acronym | Meaning |
| MVO | Modified Virtual Orbital |
| ITD | Ion Trap Detector (mass Spectrometry) |
| SARS | Scattering And Recoiling Spectrometry |
| XSAD | X-ray Small Angle Diffraction |
| HF MO LCAO | Hartree-Fock MO LCAO |
| GRIMM | Global/Regional Interhemispheric Mercury Model |
| QPO | Quasi-periodic Oscillation |
| HAART | Highly Active Antiretroviral Therapy |
| VSWIR | Very Short Wavelength IR |
| AACE | American Association Of Coast Engineers |