Cross references: 1. phloem
xy.lem \'zi--l*m, -.lem\ n [G, fr. Gk xylon] : a complex tissue in the
vascular system of higher plants consisting of vessels, tracheids, or both
usu. together with wood fibers and parenchyma cells, functioning chiefly in
conduction but also in support and storage, and typically constituting the
woody element (as of a plant stem)