Meaning

adjective derived from experience or the experience of existence; - Benjamin Farrington; - John Dewey

adjective of or as conceived by existentialism

adjective relating to or dealing with existence (especially with human existence)

originThe adjective is a learned borrowing from Late Latin existentialis, exsistentialis (“coming into or relating to existence”) + English -al (suffix meaning ‘of or pertaining to’ forming adjectives; and forming nouns of verbal action). Existentialis, exsistentialis are derived from Late Latin existentia, exsistentia (“existence”) + Latin -ālis (suffix forming adjectives of relationship); and…

Etymology from Wiktionary, CC BY-SA 3.0