tube nucleus
noun
: 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
Word History
First Known Use
1939, in the meaning defined above
Dictionary Entries Near tube nucleus
Cite this Entry
“Tube nucleus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tube%20nucleus. Accessed 19 Apr. 2024.
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Kids Definition
tube nucleus
noun
: a nucleus of a pollen grain that is believed to control the growth of the pollen tube
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