Definitions for tracheidˈtreɪ ki ɪd

This page provides all possible meanings and translations of the word tracheid

Princeton's WordNetRate this definition:(0.00 / 0 votes)

  1. tracheid(noun)

    long tubular cell peculiar to xylem

WiktionaryRate this definition:(0.00 / 0 votes)

  1. tracheid(Noun)

    A tracheid cell.

  2. Origin: From Tracheïde, corresponding to .

Webster DictionaryRate this definition:(0.00 / 0 votes)

  1. Tracheid(noun)

    a wood cell with spiral or other markings and closed throughout, as in pine wood

FreebaseRate this definition:(0.00 / 0 votes)

  1. Tracheid

    Tracheids are elongated cells in the xylem of vascular plants that serve in the transport of water and mineral salts. Tracheids are one of two types of tracheary elements, vessel elements being the other. Tracheids, unlike vessel elements, do not have perforations. All tracheary elements develop a thick lignified cell wall, and at maturity the protoplast has broken down and disappeared. The presence of tracheary elements is the defining characteristic of vascular plants to differentiate them from non-vascular plants. Tracheid build varies by location. The two major functions that tracheids may fulfill are contributing to the transport system and providing structural support. The secondary walls have thickenings in various forms—as annular rings; as continuous helices; as a network; as transverse nets; or, as extensive thickenings except in the region of pits. Tracheids occur in vascular bundles throughout the non-woody parts of the vascular plant and provide water and minerals collected by the roots to leaves and other parts of the plant. Tracheids provide most of the structural support in softwoods, where they are the major cell type.


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