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Adjective: thirty  thur-tee
  1. Being ten more than twenty
    - 30, xxx
Noun: thirty  thur-tee
  1. The cardinal number that is the product of ten and three
    "Thirty days hath September";
    - 30, XXX

Derived forms: thirties

See also: cardinal

Type of: large integer

Encyclopedia: Thirty, Single and Fantastic