Definition of xylem
: a complex tissue in the vascular system of higher plants that consists of vessels, tracheids, or both usually together with wood fibers and parenchyma cells, functions chiefly in conduction of water and dissolved minerals but also in support and food storage, and typically constitutes the woody element (as of a plant stem) — compare phloem
Origin of xylem
German, from Greek xylon
First Known Use: 1873
Learn More about xylem
Britannica.com: Encyclopedia article about "xylem"
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