thirtieth Hear it!

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.

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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