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tracheid
[ trey-kee-id ]
noun
Botany.
- an elongated, tapering xylem cell having lignified, pitted, intact walls, adapted for conduction and support. Compare vessel ( def 5 ).
tracheid
/ trəˈkiːɪdəl; ˈtreɪkɪɪd; ˌtreɪkɪˈaɪdəl /
noun
- botany an element of xylem tissue consisting of an elongated lignified cell with tapering ends and large pits
tracheid
/ ٰ′ŧ-ĭ,-ŧ′ /
- 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
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Derived Forms
- tracheidal, adjective
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Other 51Թ Forms
- ٰ···岹 [tr, uh, -, kee, -i-dl, trey-kee-, ahyd, -l], adjective
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51Թ 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
Examples have not been reviewed.
Water moves through small cylindrical conduits, called tracheids or vessels, that are all connected.
From
This colored scanning electron micrograph shows a bundle of tracheids in a softwood toothpick.
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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.
From
The xylem tissue of most gymnosperms comprises a single water-transporting cell type, tracheids.
From
The wood is characterized by the presence of vessels in addition to tracheids.
From
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