Definition of thirtieth in English:

thirtieth

ordinal number

  • See thirty

    • ‘His parents were celebrating their thirtieth wedding anniversary in a few months; he wanted what they had, and he had always thought he found it with his wife.’
    • ‘Jordan is completing his thirtieth year of service with the Army's 35th Signal Brigade and reaching his mandatory retirement date.’
    • ‘I wondered where she was, for the thirtieth time that hour.’
    • ‘The commemorative statue was unveiled on the thirtieth anniversary, in January this year.’
    • ‘Ranking above Bulgaria were Slovenia, in fourteenth place, Poland in thirtieth place, and Croatia in thirty-third place.’

Pronunciation

thirtieth

/ˈθəːtɪəθ/