Meaning of EXISTENTIAL in English
adj. 1 of or relating to existence. 2 Logic (of a proposition etc.) affirming or implying the existence of a thing. 3 Philos. concerned with existence, esp. with human existence as viewed by existentialism. existentially adv.
[ LL existentialis (as EXISTENCE) ]
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012