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thirtieth Definition

thir·ti·eth (t̸hʉrt′ē it̸h)

adjective

  1. preceded by twenty-nine others in a series; 30th
  2. designating any of the thirty equal parts of something

Etymology: < ME thrittythe < OE thritigotha: see thirty & -th

noun

  1. the one following the twenty-ninth
  2. any of the thirty equal parts of something;

adverb

in the thirtieth place, rank, group, etc.
thirtieth Usage Examples

Modifies a noun

  • anniversary: About the Choir Worrall Male Voice Choir celebrated its thirtieth anniversary in grand style by making its first foreign concert tour in May 2000.
  • birthday: In July 1822, just short of his thirtieth birthday, Shelley was drowned in a boating accident.
  • year: In point of fact he had just turned his thirtieth year.
  • session: Full text " It gives me great pleasure to join you for this thirtieth session of the Advisory Board on Disarmament Matters.
  • century: This cycle will continue until the late thirtieth century.
  • verse: But owing to the ambiguity of a minor word in the thirtieth verse, the sequel is commonly misread.