existential quantifier

noun

, Logic.

1. a quantifier indicating that the sentential function within its scope is true for at least one value of the variable included in the quantifier.

existential quantifier

noun

1. logic a formal device, for which the conventional symbol is ∃, which indicates that the open sentence that follows is true of at least one member of the relevant universe of interpretation, as (∃ x ) Fx meaning "something is (an) F," "something Fs," or "there are (some) Fs."

Word History and Origins

Origin of existential quantifier¹

First recorded in 1935–40