Search Result for "xylem":
Wordnet 3.0

NOUN (1)

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



The Collaborative International Dictionary of English v.0.48:

Xylem \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
   phloem.
   [1913 Webster]