• WordNet 3.6
    • n ontogenesis (biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level "he proposed an indicator of osseous development in children"
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Webster's Revised Unabridged Dictionary
    • n Ontogenesis (Biol) The history of the individual development of an organism; the sequence of events involved in the development of an organism; the history of the evolution of the germ; the development of an individual organism, -- in distinction from phylogeny, or evolution of the tribe. Called also henogenesis henogeny.
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Century Dictionary and Cyclopedia
    • n ontogenesis In biology, the history of the individual development of an organized being, as distinguished from phylogenesis, or the history of genealogical development, and from biogenesis, or life-development generally. Also ontogeny.
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Chambers's Twentieth Century Dictionary
    • n Ontogenesis on-tō-jen′e-sis the history of the individual development of an organised being as distinguished from phylogenesis and biogenesis—also Ontog′eny
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Webster's Revised Unabridged Dictionary
See Ontology, and Genesis
Chambers's Twentieth Century Dictionary
Gr. onta, things being, neut. pl. of ōn, pr.p. of einai, to be, genesis, generation.


In literature:

It summarises the history of species; ontogenesis, we are told, reproduces phylogenesis.
"A New Philosophy: Henri Bergson" by Edouard le Roy
A similar connection determines the relation between ontogenesis and phylogenesis.
"Three Contributions to the Theory of Sex" by Sigmund Freud
But ontogenesis would have furnished us with facts no less cogent.
"Creative Evolution" by Henri Bergson
It is naturally no easy matter to trace the ontogenesis of the herd instinct.
"Group Psychology and The Analysis of The Ego" by Sigmund Freud