I. ˈkwäntəˌfī(ə)r noun
( -s )
1. : a word (as a numeral) expressive of quantity
two, thirty, many, and much are quantifiers
2. : a prefix that binds the variables in a logical formula by specifying their quantity — see existential operator , universal quantifier
II. noun
: one that quantifies ; especially : a person who quantifies data, an activity, or a field of study (as history)