Webster’s Revised Unabridged Dictionary · 1913
Ontogenesis
On′to·gen′e·sis, 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.