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Noun: thirties  thur-teez
  1. The time of life between 30 and 40
    - mid-thirties, thirty-something
  2. The decade from 1930 to 1939
    - 1930s
Noun: thirty  thur-tee
  1. The cardinal number that is the product of ten and three
    - 30, XXX

Type of: decade, decennary, decennium, large integer, time of life

Part of: adulthood, maturity

Encyclopedia: Thirties