Pronunciation: (ā'tē siksth'), [key]
1. next after the eighty-fifth; being the ordinal number for 86.
2. being one of 86 equal parts.
1. an eighty-sixth part, esp. of one (1/86).
2. the eighty-sixth member of a series.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.