English

exogenetic

From exo- + genetic.

Proto-Indo-European *h₁eǵʰs ‘out of’

Proto-Hellenic *eks

Ancient Greek ἐκ ‘Out of, from’

Ancient Greek ἔξω ‘outer’

English exo-

Proto-Indo-European *ǵenh₁- ‘to beget’

…

Proto-Hellenic *gígnomai

Ancient Greek γίγνομαι ‘I come into being’

Ancient Greek γένεσις ‘origin, source’

English genesis

Today it means

adj Existing or arising outside of a system or organism; exogenous.

Language periods are conventional ranges, not dates for this word.

Etymograph / exogenetic