English
epigenesis
From epi- + -genesis.
Proto-Indo-European *ǵenh₁- ‘to produce’
Proto-Indo-European *ǵénh₁tis ‘birth, production’
Proto-Hellenic *génetis ‘origin, source’
Ancient Greek γένεσις ‘origin, source, beginning’
Latin genesis ‘generation, nativity’
English genesis
Today it means
noun The theory that an organism develops by differentiation from an unstructured egg rather than by simple enlarging of something preformed.
Language periods are conventional ranges, not dates for this word.
Etymograph / epigenesis