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eudicotyledon

/ˌjuːdaɪˌkɒtɪˈliːdən/
noun
1.
any plant belonging to one of the two major groups of flowering plants, comprising over 60 per cent of all plants, normally having net-veined leaves and two cotyledons in the seed
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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eudicotyledon in Science
eudicotyledon (y'dī-kŏt'l-ēd'n) or eudicot
  (y'dī-kŏt'l-ēd'n)

An angiosperm having two cotyledons in the seed, leaves with a network of veins radiating from a central main vein, flower parts in multiples of four or five, and a ring of vascular cambium in the stem. In contrast to most monocotyledons, eudicotyledons undergo secondary growth. Eudicotyledons are the largest angiosperm group; they include most cultivated plants and many trees.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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