dedifferentiation

noun

: reversion of specialized structures (such as cells) to a more generalized or primitive condition often as a preliminary to major physiological or structural change

Examples of dedifferentiation in a Sentence

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The cellular dedifferentiation and rapid proliferation that power blastema formation are, in molecular terms, uncomfortably close to the processes that drive tumor development. Scott Travers, Forbes.com, 9 May 2026

Word History

First Known Use

1915, in the meaning defined above

Time Traveler
The first known use of dedifferentiation was in 1915

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Cite this Entry

“Dedifferentiation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dedifferentiation. Accessed 29 Jul. 2026.

Medical Definition

dedifferentiation

noun
de·​dif·​fer·​en·​ti·​a·​tion -ˌren-chē-ˈā-shən How to pronounce dedifferentiation (audio)
: reversion of specialized structures (as cells) to a more generalized or primitive condition often as a preliminary to major physiological or structural change

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