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vascular bundle

noun, Botany
1.
a longitudinal arrangement of strands of xylem and phloem, and sometimes cambium, that forms the fluid-conducting channels of vascular tissue in the rhizomes, stems, and leaf veins of vascular plants, the arrangement varying with the type of plant.
Origin
1880-1885
1880-85
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for vascular bundle

vascular bundle

noun
1.
a longitudinal strand of vascular tissue in the stems and leaves of higher plants
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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vascular bundle in Science
vascular bundle  
A strand of primary tissues found within the stem of a plant and consisting of xylem and phloem, along with cambium. The vascular bundles develop from the procambium of the growing stem. In the monocotyledons, vascular bundles are found in complex arrangements dispersed throughout the stem. In eudicotyledons, they are arranged in a ring, with the xylem of each bundle on the inside and the phloem on the outside. Also called fibrovascular bundle. See also fascicular cambium, interfascicular cambium.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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