24-letter words containing h, o, t, d, i
- ultra low sulphur diesel — a type of diesel fuel that has a low sulphur content
- vienna definition method — Vienna Development Method
- voluntary aid detachment — (in World War I) an organization of British women volunteers who assisted in military hospitals and ambulance duties
- which stands for nothing — (language) (WSFN) A beginner's language with emphasis on graphics produced by Atari in 1983 for Atari home computers. There is also Advanced WSFN.
- which way the wind blows — air in natural motion, as that moving horizontally at any velocity along the earth's surface: A gentle wind blew through the valley. High winds were forecast.