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A dead, water-conducting cell in the xylem of vascular plants, having tapered ends and pits in the cell wall but lacking the perforations found in a vessel element.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Botany) botany an element of xylem tissue consisting of an elongated lignified cell with tapering ends and large pits
[C19: from trachea (in the sense: a vessel in a plant) + -id2]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
tra•che•id(ˈtreɪ ki ɪd)
an elongated, tapering xylem cell having woody, pitted, intact walls, adapted for conduction and support. Compare vessel (def. 4).
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||tracheid - long tubular cell peculiar to xylem|
vascular tissue - tissue that conducts water and nutrients through the plant body in higher plants
xylem - the woody part of plants: the supporting and water-conducting tissue, consisting primarily of tracheids and vessels
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