[ on-toj-uh-nee ]
/ ɒnˈtɒdʒ ə ni /

noun Biology.

the development or developmental history of an individual organism.


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Also on·to·gen·e·sis [on-tuh-jen-uh-sis] /ˌɒn təˈdʒɛn ə sɪs/.
Compare phylogeny.

Origin of ontogeny

First recorded in 1870–75; onto- + -geny


on·to·ge·net·ic [on-tuh-juh-net-ik] /ˌɒn tə dʒəˈnɛt ɪk/, on·to·ge·net·i·cal, on·to·gen·ic, adjectiveon·to·ge·net·i·cal·ly, on·to·gen·i·cal·ly, adverbon·tog·e·nist, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for ontogenic

  • This, as already explained, is the embryonic or Ontogenic series.

    Evolution|Joseph Le Conte
  • Because we can trace the change from the one to the other in the ontogenic series.

    Evolution|Joseph Le Conte
  • This ontogenic fact is supremely important, for the most far-reaching conclusions may be drawn from it.

  • But there is another essential element in ontogenic evolution.

    Evolution|Joseph Le Conte

British Dictionary definitions for ontogenic


ontogenesis (ˌɒntəˈdʒɛnɪsɪs)

/ (ɒnˈtɒdʒənɪ) /


the entire sequence of events involved in the development of an individual organismCompare phylogeny

Derived forms of ontogeny

ontogenic (ˌɒntəˈdʒɛnɪk) or ontogenetic (ˌɒntədʒɪˈnɛtɪk), adjectiveontogenically or ontogenetically, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for ontogenic

[ ŏn-tŏjə-nē ]


The origin and development of an individual organism from embryo to adult.ontogenesis
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for ontogenic

[ ŏn-tŏjə-nē ]

The origin and development of an individual organism from embryo to adult.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.