thirty
UK /ˈθɜːti/ · US /ˈθɝti/ numeral, noun
Forms thirties threety thretty thirtie XXX
- numeral The cardinal number occurring after twenty-nine and before thirty-one, represented in Arabic numerals as 30.
- noun (slang) A rack of thirty beers.
- noun (broadcasting) A commercial lasting 30 seconds.
Synonyms
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”).
Webster’s 1913
- adjective Being three times ten; consisting of one more than twenty-nine; twenty and ten; as, the month of June consists of thirty days.
- noun The sum of three tens, or twenty and ten; thirty units or objects.
- noun A symbol expressing thirty, as 30, or XXX.
Etymology [OE. thritty, AS. Þritig, Þrittig; akin to D. dertig, G. dreissig, Icel. Þrjatiu, Þrjatigi, Þrir teger, Goth. Þreis tigjus, i.e., three tens. See Three, and Ten, and cf. Thirteen.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “thirty”, CC BY-SA 4.0. Details