polar nucleus


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Related to polar nucleus: antipodal cells

polar nucleus

n.
Either of two nuclei in the embryo sac of a flowering plant that fuse with each other and with a male gamete to form the primary endosperm nucleus.

po′lar nu′cleus


n.
either of two female haploid nuclei, in the embryo sac of flowers, that fuse to produce a diploid nucleus.
[1880–85]
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