24-letter words containing d, i, a, c, o
- trading standards office — an office of the local authority department that deals with trading standards
- tricarboxylic acid cycle — Krebs cycle.
- turks and caicos islands — a UK Overseas Territory in the Caribbean, southeast of the Bahamas: consists of the eight Turks Islands, separated by the Turks Island Passage from the Caicos group, which has six main islands. Capital: Grand Turk. Pop: 47 754 (2013 est). Area: 430 sq km (166 sq miles)
- united states of america — United States. Abbreviation: U.S.A., USA.
- video cassette recording — a recording made using a tape recorder for vision and sound signals using magnetic tape in closed plastic cassettes: used for recording and playing back television programmes and films
- voluntary aid detachment — (in World War I) an organization of British women volunteers who assisted in military hospitals and ambulance duties
- ways and means committee — a standing committee of the US House of Representatives that supervises all financial legislation
- 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.
- world boxing association — the international organization which regulates the sport of boxing
- yellow-bellied sapsucker — a woodpecker, Sphyrapicus varius, of eastern North America, having a red patch on the forehead and black and white plumage with a pale-yellow abdomen, and feeding on sap from trees.