thirty

== English == === Alternative forms === threety (obsolete or nonstandard), thirtie (obsolete) Arabic numerals: 30 Roman numerals: XXX === Etymology === From Middle English thirty, metathetic alternant of Middle English thriti, þrittiȝ, from Old English þrītiġ (“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”). === Pronunciation === (Received Pronunciation) IPA(key): /ˈθɜːti/ (General American) enPR: thŭr′tē, IPA(key): /ˈθɝti/, [ˈθɝɾi] Rhymes: -ɜː(ɹ)ti === Numeral === thirty The cardinal number occurring after twenty-nine and before thirty-one, represented in Arabic numerals as 30. Synonym: triacontad For more quotations using this term, see Citations:thirty. ==== Derived terms ==== ==== Translations ==== ==== See also ==== (ordinal: the last of 30):, trigesimal (adjectival form): tricenary (around 30): thirtyish (containing 30 of something): trigesimal (a 30-year-old person): tricenarian, thirtysomething (every 30 years): tricennial, trigintennial (30-sided figure): triacontahedron, triacontagon (30-sided): triacontahedral === Noun === thirty (plural thirties) (slang) A rack of thirty beers. (broadcasting) A commercial lasting 30 seconds. Coordinate term: sixty === References ===