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polar nucleus

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polar nucleus

 
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–noun
Botany. either of two female haploid nuclei, in the embryo sac of flowers, that fuse to produce a diploid nucleus, which combines with a male nucleus to form the endosperm.
Origin:
1880–85
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Polar USA Heart Monitors
Free Next Day Delivery! Polar Heart Monitors. 800-403-8285
www.HeartRateMonitorsUSA.com/Polar
polar nucleus  
n.  Either of two nuclei located centrally in a flowering plant embryo sac that eventually fuse to form the endosperm nucleus.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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