| Abbreviation | Definition |
|---|---|
| UVC | Ultra-Violet C (250-260nm) |
| UVI | UltraViolet Index |
| UVIF | UltraViolet Index Forecast |
| UVL | Ultra-Violet Lamp |
| UVO | Ultra-Violet Ozone |
| UVOC | Ultra-Violet Ozone Cleaning |
| UVP | Ultra-Violet Photometer |
| UVS | Ultra-Violet Spectrometer |
| UVV | Ultra-Violet V (395-445nm) |
| UVV | Upward Vertical Velocity |
| UW | UnderWater |
| UWT | Unsteady Wind Tunnel |
| UWV | Umbrella Weather Vane |
| VA | Volcanic Ash |
| VAAC | Volcanic Ash Advisory Center |
| VAAC | Volcanic Ash Advisory Centre |
| VAD | Velocity and Azimuth Display |
| VAS | VISSR Atmospheric Sounder |
| VAV | Variable Air Velocity |
| VBX | Vernon Balloon eXperiment |