Pronunciation: (nīn'tē-ith), [key]
1. next after the eighty-ninth; being the ordinal number for 90.
2. being one of 90 equal parts.
1. a ninetieth part, esp. of one (1/90).
2. the ninetieth member of a series.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.