Definitions
1.nounEllipsis of existential clause
2.nounEllipsis of existential type
3.adjectiveOf, or relating to existence.
4.adjectiveConcerning the very existence of, especially with regard to extinction.
5.adjectiveBased on experience; empirical.
6.adjectiveOf, or relating to existentialism.
7.adjectiveRelating to part of a clause that indicates existence, e.g. "there is".