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EnglishEdit

English cardinal numbers
 <  29 30 31  > 
    Cardinal : thirty
    Ordinal : thirtieth

Alternative formsEdit

EtymologyEdit

From Middle English thirty, metathetic alternant of Middle English thritti, þrittiȝ, from Old English þritiġ (thirty), from Proto-Germanic *þrīz tigiwiz (thrity, literally three tens), equivalent to three +‎ -ty.[1][2] Cognate with Scots therty, tretty (thirty), West Frisian tritich (thirty), Dutch dertig (thirty), German dreißig (thirty).

PronunciationEdit

NumeralEdit

thirty

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

Derived termsEdit

TranslationsEdit

See alsoEdit

NounEdit

thirty (plural thirties)

  1. (slang) A rack of thirty beers.

ReferencesEdit

  1. 1.0 1.1 thirty” in Merriam-Webster Online Dictionary
  2. 2.0 2.1 thirty” in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present.
  3. ^ Macmillan (US) (compare Macmillan (UK)
  4. ^ the Oxford Advanced Learner's Dictionary