Dictionary
man•y-one
Pronunciation: (men'ē-wun'; usually read as men'ē-tu-wun'), [key]—
adj. Logic, Math.
(of a relation) having the property that each element is assigned to one element only but that many elements may be assigned to the same element.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.