sev•en•ti•ethPronunciation: (sev'un-tē-ith), [key]
next after the sixty-ninth; being the ordinal number for 70.
being one of 70 equal parts.
a seventieth part, esp. of one (1/70
the seventieth member of a series.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.