thirtieth: Meaning and Definition of
thir•ti•eth
Pronunciation: (thûr'tē-ith), [key] — adj.
- next after the twenty-ninth; being the ordinal number for 30.
- being one of 30 equal parts.
—n. - a thirtieth part, esp. of one ().
- the thirtieth member of a series.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.