(n)(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, Syn.maturation, ontogeny, ontogenesis, development, growing, Ant.nondevelopment
The Collaborative International Dictionary of English (GCIDE) v.0.53Collaborative International Dictionary (GCIDE)
{ } n. [ See Ontology, and Genesis. ] (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. Syn. -- growth, growing, maturation, development. [ 1913 Webster ]
[はっせい, hassei](n, vs, adj-no) (1) outbreak; spring forth; occurrence; incidence; origin; (2) (See 個体発生) ontogeny; development of complex multicellular structures from cell(s) in a simple state; (P)#792[Add to Longdo]