quantifier

noun

1. 1

   (grammar) A word, such as all or many, that expresses a quantity

2. 2

   An operator, such as the universal quantifier (written as ∀) or the existential quantifier (∃), used in predicate calculus to indicate the degree that predicate is true for a specified set.

3. 3

   A symbol or symbols in a regular expression indicating the number of characters to be matched.