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n. The supporting and water-conducting tissue of vascular plants, consisting primarily of tracheids and vessels; woody tissue.

n. A vascular tissue in land plants primarily responsible for the distribution of water and minerals taken up by the roots; also the primary component of wood.

n. That portion of a fibrovascular bundle which has developed, or will develop, into wood cells; -- distinguished from phloëm.

n. In botany, that part of a fibrovascular bundle which contains ducts or tracheids—that is, the woody part, as distinguished from the phloëm, or bast part. Compare phloëm. See protoxylem, leptoxylem.

n. the woody part of plants: the supporting and water-conducting tissue, consisting primarily of tracheids and vessels

"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."

vascular tissue   

phloem   

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