Definition of "xylem" []

• The supporting and water-conducting tissue of vascular plants, consisting primarily of tracheids and vessels; woody tissue. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "As more water vapor molecules exit the plant, the remaining water molecules tug on each other and will pull an entire column of water throughout the plant body through special tissues called xylem during the process of transpiration."
• "On the other hand, leafhoppers and planthoppers, that feed at least half the time on the deeper layer of conductive tissues (called the xylem), get knocked down."
• "The xylem is the part of the vascular system that carries water and nutrients from the roots to the leaves."