sev•en•ty-thirdPronunciation: (sev'un-tē-thûrd'), [key]
next after the seventy-second; being the ordinal number for 73.
being one of 73 equal parts.
a seventy-third part, esp. of one (1/73
the seventy-third member of a series.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.