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thirty

Pronunciation: /ˈθɜːti/

The English word “thirty” has 3 meanings listed here.

numeral

  1. The cardinal number occurring after twenty-nine and before thirty-one, represented in Arabic numerals as 30.

noun

  1. A rack of thirty beers.
  2. A commercial lasting 30 seconds.

Etymology

From Middle English thirty, metathetic alternant of thritty, from Old English þrītiġ, þrittiġ (“thirty”), from Proto-Germanic *þrīz tigiwiz (“thirty”, literally “three tens”), equivalent to three + -ty. Cognate with Scots therty, tretty (“thirty”), West Frisian tritich (“thirty”), Dutch dertig (“thirty”), German dreißig (“thirty”).

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