twen•ty-fifthPronunciation: (twen'tē-fifth', twun'-), [key]
next after the twenty-fourth; being the ordinal number for 25.
being one of 25 equal parts.
a twenty-fifth part, esp. of one (1/25
the twenty-fifth member of a series.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.