thir•ty-ninthPronunciation: (thûr'tē-nīnth'), [key]
next after the thirty-eighth; being the ordinal number for 39.
being one of 39 equal parts.
a thirty-ninth part, esp. of one (1/39
the thirty-ninth member of a series.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.