Pronunciation: (fif'tē-sev'un), [key]
1. a cardinal number, 50 plus 7.
2. a symbol for this number, as 57 or LVII.
3. a set of this many persons or things.
amounting to 57 in number.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.