What is the meaning of retrogression?

Passing from a more complex to a simpler biological form.
- synonyms: degeneration
Returning to a former state.
- synonyms: regression, regress, reversion, retroversion

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APA	WordNet. (2010). retrogression. Retrieved September 22, 2026, from http://smartdefine.org/retrogression/definitions/1306582
Chicago	WordNet. 2010. "retrogression" http://smartdefine.org/retrogression/definitions/1306582 (accessed September 22, 2026).
Harvard	WordNet 2010, retrogression, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/retrogression/definitions/1306582>.
MLA	WordNet. "retrogression" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/retrogression/definitions/1306582>

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