thirtieth: Meaning and Definition of

thir•ti•eth

Pronunciation: (thûr'tē-ith), [key]
— adj.
  1. next after the twenty-ninth; being the ordinal number for 30.
  2. being one of 30 equal parts.
—n.
  1. a thirtieth part, esp. of one ().
  2. the thirtieth member of a series.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
Thirteenth Amendment thirty
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