23-letter words containing y, c, h, r, o
- psychomotor retardation — a generalized slowing of psychological and physical activity, frequently occurring as a symptom of severe depression.
- public-key cryptography — public-key encryption
- schizotypal personality — a personality disorder characterized by a group of symptoms similar to but less severe than schizophrenia, as odd behavior, peculiar thinking, and social isolation.
- scottish national party — a political party advocating the independence of Scotland, founded in 1934
- secondary modern school — (formerly) a secondary school offering a more technical or practical and less academic education than a grammar school
- secondary seventh chord — a chord formed by superposition of three thirds upon any degree of the scale except the dominant.
- secondary sex character — any of a number of manifestations, as development of breasts or beard, muscularity, distribution of fat tissue, and change of pitch in voice, specific to each sex and incipient at puberty but not essential to reproduction.
- structural anthropology — a school of anthropology founded by Claude Lévi-Strauss and based loosely on the principles of structural linguistics.
- thank one's lucky stars — any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night.
- the library of congress — the official library of the United States in Washington, DC. It houses extensive collections in all subject areas and formats, important historical documents, and is also a depository for copyrighted materials.
- throttle-body injection — a fuel-injection system in which an injector (throttle-body injector) delivers fuel to a central location within the intake manifold of the engine. Abbreviation: TBI.
- to stick in your throat — If something sticks in your throat, you find it unacceptable.
- to your heart's content — as much as you please
- white-coat hypertension — the phenomenon of having elevated blood pressure only during a medical consultation
- yellow-headed blackbird — a North American blackbird, Xanthocephalus xanthocephalus, having a yellow head.