(n)a unit strand of the vascular system in stems and leaves of higher plants consisting essentially of xylem and phloem, Syn.vascular strand, fibrovascular bundle
The Collaborative International Dictionary of English (GCIDE) v.0.53Collaborative International Dictionary (GCIDE)
a. [ L. fibra a fiber + E. vascular. ] (Bot.) Containing woody fiber and ducts, as the stems of all flowering plants and ferns; -- opposed to cellular. [ 1913 Webster ]