tube nucleus

noun

Definition of tube nucleus

: the one of the two nuclei formed by mitotic division of a microspore during the formation of a pollen grain that is held to control subsequent growth of the pollen tube and that does not divide again — compare generative nucleus

First Known Use of tube nucleus

1939, in the meaning defined above

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Time Traveler for tube nucleus

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The first known use of tube nucleus was in 1939

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Dictionary Entries Near tube nucleus

tube-nosed bat

tube nucleus

tube of Bellini

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Cite this Entry

“Tube nucleus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tube%20nucleus. Accessed 22 May. 2022.

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