adjective ep·i·gene \ˈepəˌjēn\

Definition of epigene

  1. 1 of a crystal :  not natural to the substance in which it is found

  2. 2 :  formed, originating, or taking place on or not far below the surface of the earth —opposed to hypogene

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Origin and Etymology of epigene

French épigène, from Greek epigenēs growing after, from epigignesthai to be born after — more at epigone

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