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tracheid
[trey-kee-id]
noun
an elongated, tapering xylem cell having lignified, pitted, intact walls, adapted for conduction and support.
tracheid
/ trəˈkiːɪdəl, ˈtreɪkɪɪd, ˌtreɪkɪˈaɪdəl /
noun
botany an element of xylem tissue consisting of an elongated lignified cell with tapering ends and large pits
tracheid
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.
Compare vessel element
Other 51Թ Forms
- tracheidal adjective
51Թ History and Origins
Origin of tracheid1
Example Sentences
Water moves through small cylindrical conduits, called tracheids or vessels, that are all connected.
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.
The wood is characterized by the presence of vessels in addition to tracheids.
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