fif•ty-eighthPronunciation: (fif'tē-ātth', -āth'), [key]
next after the fifty-seventh; being the ordinal number for 58.
being one of 58 equal parts.
a fifty-eighth part, esp. of one (1/58
the fifty-eighth member of a series.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.