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Definition of: ontogeny
(on·toj′ə·nē) noun Biol.
The history of the development of the individual organism: distinguished from phylogeny. Also on·to·gen·e·sis (on′tō·jen′ə·sis). [<ONTO- + -GENY]
—on·to·ge·net·ic (on′tō·jə·net′ik), on′to·gen′ic (-jen′ik) adjective
—on·tog′e·nist noun
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