a. [f. EPIGENESIS, on the analogy of GENETIC.] Of or pertaining to, or of the nature of, epigenesis.

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1883.  W. Arthur, Fernley Lect., 160. Epigenetic [printed epigenitic] progress from germ to organ.

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1887.  Mind, Oct., 629. He … contends for an ‘epigenetic’ as distinguished from an evolutionary view of the origins of civilisation.

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  Hence Epigenetically adv.

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