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(Biology) the development of structures and organs in an embryo or larva that are adaptations to its way of life and are not retained in the adult form. Compare recapitulation2
caenogenetic, ˌcainogeˈnetic, ˌkainogeˈnetic ˌcenogeˈnetic, ˌkenogeˈnetic adj
ˌcaenogeˈnetically, ˌcainogeˈnetically, ˌkainogeˈnetically ˌcenogeˈnetically, ˌkenogeˈnetically adv
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|Noun||1.||caenogenesis - introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution)|
growing, growth, ontogenesis, ontogeny, maturation, development - (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"