资料来源 : Webster's Revised Unabridged Dictionary (1913)

Ontogenesis \On`to*gen"e*sis\, Ontogeny \On*tog"e*ny\, n. [See
   {Ontology}, and {Genesis}.] (Biol.)
   The history of the individual 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}.