endosperm nucleus
noun
plural endosperm nuclei
: the triploid nucleus that is formed in the embryo sac of a flowering plant during double fertilization by fusion of a sperm cell with two polar nuclei and that gives rise to the nutritive endosperm
Cite this Entry
“Endosperm nucleus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/endosperm%20nucleus. Accessed 31 Oct. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share