23-letter words containing c, a, d, u, o, s
- refuse disposal service — a place or facility where rubbish and waste can be disposed
- russian orthodox church — the national Church of Russia, constituting a branch of the Eastern Church, presided over by the Patriarch of Moscow
- school (crossing) guard — a person, either an adult or an older student, whose duty it is to help children cross streets near schools safely
- security association id — (networking) (SAID) A 32-bit field added to packet headers for encryption and authentication in the proposed Internet Protocol Version 6.
- social education centre — a daycentre, run by a local authority, for people with learning disabilities and sometimes also for people who have physical disabilities or are mentally ill
- stand up and be counted — express opinion
- state-trading countries — countries whose export and import trading is government controlled
- the chamber of deputies — the lower legislative assembly in some parliaments
- transcendental equation — an equation that involves transcendental functions.
- transcendental function — a function that is not an algebraic function.
- trellis code modulation — (TCM) A modulation technique with hardware error detection and correction.
- turn a cold shoulder to — to treat with disdain; snub
- turn-and-slip indicator — bank-and-turn indicator.
- unconditional discharge — the release of a defendant without having to spend time on parole or probation
- unincorporated business — a privately owned business, often owned by one person who has unlimited liability as the business is not legally registered as a company
- united states air force — the permanent or regular military air force of the United States, established in 1947 as a separate service under the authority of the Department of Defense: a branch of the U.S. Army before 1947. Abbreviation: USAF.
- volumetric displacement — the volume of air per revolution that passes through a mechanical pump when the pressure at the intake and the exhaust is the same as that of the atmosphere
- water off a duck's back — any of numerous wild or domesticated web-footed swimming birds of the family Anatidae, especially of the genus Anas and allied genera, characterized by abroad, flat bill, short legs, and depressed body.