ontogenesis(n = noun.process) development, growing, growth, maturation, ontogeny - (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"
is a kind of biological process, organic process
has parts: gastrulation
has particulars: culture, amelogenesis, angiogenesis, apposition, auxesis, anthesis, blossoming, efflorescence, florescence, flowering, inflorescence, caenogenesis, cainogenesis, cenogenesis, kainogenesis, kenogenesis, cohesion, cultivation, cytogenesis, cytogeny, foliation, leafing, fructification, gametogenesis, germination, sprouting, habit, infructescence, intussusception, juvenescence, life cycle, masculinisation, masculinization, virilisation, virilization, morphogenesis, myelinisation, myelinization, neurogenesis, palingenesis, recapitulation, proliferation, psychogenesis, psychogenesis, psychomotor development, psychosexual development, rooting, suppression, dentition, odontiasis, teething, teratogenesis, vegetation
Derived form adjective ontogenetic₁

   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. [1913 Webster]

ontogenesis, n. the origin and development of an individual (cf. PHYLOGENESIS).

Derivative:
ontogenetic adj. ontogenetically adv.

Etymology:
formed as ONTOGENY + Gk genesis birth