thirtieth

(t̸hʉrtē it̸h)

adjective

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

Origin: < 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.

See thirtieth in American Heritage Dictionary 4

noun
  1. The ordinal number matching the number 30 in a series.
  2. One of 30 equal parts.

Related Forms:

  • thirˈti·eth adverb & adj.

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