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ontogeny

ontogeny Ontogeny is the development of an individual organism or person, as distinguished from the evolutionary development of a species, or phylogeny.

Ontogeny is the development of an individual organism or person, as distinguished from the evolutionary development of a species, or phylogeny. In this historical usage, it includes both development and growth, and was often discussed in relation to whether individual development reflects parts of a species’ evolutionary history.

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Sources

Drafting source: Baldwin Dictionary of Philosophy and Psychology, 1901. 1901 New York Macmillan original; archive index checked 2026-10-18. “Ontogeny” (Ontogeny).
public-domain-US · Definition uses new wording; original source retains its stated licence. · Source snapshot SHA-256: 5a57909eff5bb21c5fc893568ecad4daa30a977d19eddbffe60ce089d1f49f87

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PsychTerms (psychterms.org), CC BY 4.0, version 1. “ontogeny.” Development preview.

Version 1 · SHA-256: 8adc1af53ad98001c894fa082c7a57859fe8cbdb0e78d213f63a0ff5d33dcaae

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