from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The origin and development of an individual organism from embryo to adult. Also called ontogenesis.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The development of an individual organism.
from The Century Dictionary and Cyclopedia
- n. Same as ontogenesis.
- n. Specifically or specially, the ontogenesis of an individual living organism; the entire development and metamorphosis or life-history of a given organism, as distinguished from phylogeny.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- 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
From onto- + -geny, after German Ontogenie. (Wiktionary)