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tracheid

[ trey-kee-id ]

noun

, Botany.
  1. an elongated, tapering xylem cell having lignified, pitted, intact walls, adapted for conduction and support. Compare vessel ( def 5 ).


tracheid

/ trəˈkiːɪdəl; ˈtreɪkɪɪd; ˌtreɪkɪˈaɪdəl /

noun

  1. botany an element of xylem tissue consisting of an elongated lignified cell with tapering ends and large pits
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

tracheid

/ trākē-ĭd,-kēd′ /

  1. An elongated, water-conducting cell in xylem, one of the two kinds of tracheary elements. Tracheids have pits where the cell wall is modified into a thin membrane, across which water flows from tracheid to tracheid. The cells die when mature, leaving only their lignified cell walls. Tracheids are found in all vascular plants.
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Derived Forms

  • tracheidal, adjective
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Other Words From

  • tra·che·i·dal [tr, uh, -, kee, -i-dl, trey-kee-, ahyd, -l], adjective
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Word History and Origins

Origin of tracheid1

First recorded in 1870–75; trache(a) + -id 3
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Word History and Origins

Origin of tracheid1

C19: from trachea (in the sense: a vessel in a plant) + -id ²
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Example Sentences

Water moves through small cylindrical conduits, called tracheids or vessels, that are all connected.

From Salon

This colored scanning electron micrograph shows a bundle of tracheids in a softwood toothpick.

If during a drought air starts to creep into the tracheids from the roots, like a kid slurping up the dregs of a drink through a straw, the torus is pulled up against the aperture.

The xylem tissue of most gymnosperms comprises a single water-transporting cell type, tracheids.

From Nature

The wood is characterized by the presence of vessels in addition to tracheids.

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tracheationtracheitis