Pronunciation: (kwon'tu-fī"ur), [key]
1. Logic.an expression, as “all” or “some,” that indicates the quantity of a proposition. Cf. existential quantifier, universal quantifier.
2. a word, esp. a modifier, that indicates the quantity of something.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.