Pronunciation: (twen'tē-āt', twun'-), [key]
1. a cardinal number, 20 plus 8.
2. a symbol for this number, as 28 or XXVIII.
3. a set of this many persons or things.
amounting to 28 in number.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.