dy·​nein ˈdī-ˌnēn How to pronounce dynein (audio)
: an ATPase that is associated especially with microtubules involved in the movement of cellular organelles and structures (such as cilia, flagella, and chromosomes)

Word History


dyne + -in entry 1

First Known Use

1965, in the meaning defined above

Time Traveler
The first known use of dynein was in 1965

Dictionary Entries Near dynein

Cite this Entry

“Dynein.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dynein. Accessed 14 Jul. 2024.

Medical Definition


: an ATPase that cross-links adjacent microtubules and that by controlling their relative sliding motion regulates the movement of cellular organelles and structures (as the beating of cilia and flagella and the movement of chromosomes to the poles of the spindle)

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