Definitions for: Xylem

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

Webster (1913) Definition: Xy"lem, n. [Gr. xy`lon wood.] (Bot.)
That portion of a fibrovascular bundle which has developed,
or will develop, into wood cells; -- distinguished from
phlo["e]m.

See Also: ligneous plant, tracheid, vascular tissue, woody plant