the development or developmental history of an individual organism.
- Also on·to·gen·e·sis [on-tuh-jen-uh-sis]. /ˌɒn təˈdʒɛn ə sɪs/.
- on·to·ge·net·ic [on-tuh-juh-net-ik], /ˌɒn tə dʒəˈnɛt ɪk/, on·to·ge·net·i·cal, on·to·gen·ic, adjective
- on·to·ge·net·i·cal·ly, on·to·gen·i·cal·ly, adverb
- on·tog·e·nist, noun
- Compare phylogeny.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use ontogeny in a sentence
It is expressed by the formula of Herbert Spencer, "ontogeny recapitulates phylogeny."Education: How Old The New | James J. Walsh
It relies on the facts of paleontology, and fills up the gaps in this by comparative anatomy and ontogeny.
ontogeny teaches unmistakably that its elementary organs, the epidermic cells, develop entirely from the ectoderm.
The three most valuable sources of evidence in phylogeny are paleontology, comparative anatomy, and ontogeny.
As we have seen, ontogeny is not completed at hatching or birth.Inheritance of Characteristics in Domestic Fowl | Charles Benedict Davenport
British Dictionary definitions for ontogeny
the entire sequence of events involved in the development of an individual organism: Compare phylogeny
- ontogenic (ˌɒntəˈdʒɛnɪk) or ontogenetic (ˌɒntədʒɪˈnɛtɪk), adjective
- ontogenically 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
Scientific definitions for ontogeny
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.