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Meaning of xylem

xy•lem

Pronunciation: (zī'lum, -lem), [key]
— n. Bot.
  1. a compound tissue in vascular plants that helps provide support and that conducts water and nutrients upward from the roots, consisting of tracheids, vessels, parenchyma cells, and woody fibers.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
xylan xylem ray