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Webster 1913 Edition

Adj.

[Pref.

epi-

+ Gr.

γίγνεσθαι

to be born, grow.]

(Crystallog.)

Foreign; unnatural; unusual; – said of forms of crystals not natural to the substances in which they are found.

(Geol.)

Formed originating on the surface of the earth; – opposed to

hypogene

;

as,

epigene

rocks

epigene ‎(comparative more epigene, superlative most epigene)

(crystallography) foreign; unusual; not natural to the substance in which it was found.
(mineralogy) Of or pertaining to the region just below the surface of the earth.