English Online Dictionary. What means thirty? What does thirty mean?
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.
- For quotations using this term, see Citations:thirty.
Synonyms
- triacontad
Derived terms
Translations
See also
- (ordinal: the last of 30): thirtieth, 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.