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Definitions

American Heritage® Dictionary of the English Language, Fourth Edition

  1. n. The supporting and water-conducting tissue of vascular plants, consisting primarily of tracheids and vessels; woody tissue.

Century Dictionary and Cyclopedia

  1. n. In botany, that part of a fibrovascular bundle which contains ducts or tracheids—that is, the woody part, as distinguished from the phloëm, or bast part. Compare phloëm. See protoxylem, leptoxylem.

Wiktionary

  1. n. botany A vascular tissue in land plants primarily responsible for the distribution of water and minerals taken up by the roots; also the primary component of wood.

GNU Webster's 1913

  1. n. (Bot.) That portion of a fibrovascular bundle which has developed, or will develop, into wood cells; -- distinguished from phloëm.

WordNet 3.0

  1. n. the woody part of plants: the supporting and water-conducting tissue, consisting primarily of tracheids and vessels

Etymologies

  1. From German Xylem, from Ancient Greek ξύλον (ksulon, "wood"). (Wiktionary)
  2. German, from Greek xulon, wood. (American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

  • “On the other hand, leafhoppers and planthoppers, that feed at least half the time on the deeper layer of conductive tissues (called the xylem), get knocked down.”

    4 What's in a Neem

  • “The xylem is the part of the vascular system that carries water and nutrients from the roots to the leaves.”

    5. How plants live and grow

  • “In dicot roots the xylem is the tissue at the core (Figure 5.3).”

    5. How plants live and grow

  • “In the xylem are a number of vessels (_C_, _tr. _) at once distinguishable from the other cells by their definite form, firm walls, and empty cavity.”

    Elements of Structural and Systematic Botany For High Schools and Elementary College Courses

  • “As more water vapor molecules exit the plant, the remaining water molecules tug on each other and will pull an entire column of water throughout the plant body through special tissues called xylem during the process of transpiration.”

    Featured Articles - Encyclopedia of Earth

  • “In nature, trees use water in tubular tissues, called xylem, like ropes that pull more water out of the ground, delivering it to leaves.”

    The Open Piehole

  • “This tissue is comprised of two types of specialized cells called xylem and phloem.”

    Citizendium, the Citizens' Compendium - Recent changes [en]

  • “(AL-jee) Primitive organisms that contain chlorophyll but do not have structures, such as xylem and phloem, to transport fluids.”

    algae

  • “The title of the exhibition, "xylem," refers to the water-conducting tissue of vascular or woody plants.”

    The Daily News - News

  • “WHAT: Patrick Renner's exhibit, "xylem," and Jonathan Leach's "Beauty and the Byproduct”

    The Daily News - News

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‘xylem’ has been looked up 3045 times, added to 30 lists, and has a Scrabble score of 17.