| Acronym | Meaning |
| UKAS | United Kingdom Accreditation Service |
| LSDXC | Local-spin-density-exchange-correlation (for Mol. Property) |
| MPDS | Moment-polarized Dirac-Slater |
| APSA | Advanced Photovoltaic Solar Array |
| MAOP | Maximum Allowable Operating Pressure |
| WPCF | Water Pollution Control Federation |
| ADMR | Absorption Detected Magnetic Resonance |
| CGF | Coulomb Green Function |
| ARROW | Anti-resonant Reflecting Optical Waveguide |
| VPD | Vapor Pressure Deficit |