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endodermis

[en-doh-dur-mis]
noun Botany.
  1. a specialized tissue in the roots and stems of vascular plants, composed of a single layer of modified parenchyma cells forming the inner boundary of the cortex.
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Origin of endodermis

First recorded in 1880–85; endo- + -dermis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for endodermis

Historical Examples

  • Grafted walnuts show callus growth from the cambium, and also from the pith of stems and the endodermis of the root.

    Northern Nut Growers Association Report of the Proceedings at the Thirty-Eighth Annual Meeting

    Northern Nut Growers Association


British Dictionary definitions for endodermis

endodermis

noun
  1. botany the specialized innermost layer of cortex in roots and some stems, which controls the passage of water and dissolved substances between the cortex and stele
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Word Origin

C19: from New Latin, from endo- + Greek derma skin
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

endodermis in Science

endodermis

[ĕn′də-dûrmĭs]
  1. The innermost layer of the cortex that forms a sheath around the vascular tissue of roots and some stems. In the roots the endodermis helps regulate the intake of water and minerals into the vascular tissues from the cortex.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.