Pronunciation: (twen'tē-sev'unth, twun'-), [key]
1. next after the twenty-sixth; being the ordinal number for 27.
2. being one of 27 equal parts.
1. a twenty-seventh part, esp. of one (1/27).
2. the twenty-seventh member of a series.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.