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plasmolysis

[plaz-mol-uh-sis]
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noun Botany.
  1. contraction of the protoplasm in a living cell when water is removed by exosmosis.
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Origin of plasmolysis

First recorded in 1880–85; plasmo- + -lysis
Related formsplas·mo·lyt·ic [plaz-muh-lit-ik] /ˌplæz məˈlɪt ɪk/, adjectiveplas·mo·lyt·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for plasmolysis

Historical Examples

  • It is invisible in the living cell but is evident in plasmolysis.

    The Diatomaceae of Philadelphia and Vicinity

    Charles Sumner Boyer

  • Maceration, freezing and plasmolysis alike yield poor results.

  • Sap vacuoles must be distinguished from spores, on the one hand, and the vacuolated appearance due to plasmolysis, on the other.


British Dictionary definitions for plasmolysis

plasmolysis

noun
  1. the shrinkage of protoplasm away from the cell walls that occurs as a result of excessive water loss, esp in plant cellsSee exosmosis
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Derived Formsplasmolytic (ˌplæzməˈlɪtɪk), adjectiveplasmolytically, adverb
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

Word Origin and History for plasmolysis

n.

1883, from French plasmolysis (1877), from plasmo- (see plasma) + Greek lysis "a loosening" (see -lysis). Related: Plasmolytic; plasmolyze.

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Online Etymology Dictionary, © 2010 Douglas Harper

plasmolysis in Medicine

plasmolysis

(plăz-mŏlĭ-sĭs)
n. pl. plas•mol•y•ses (-sēz′)
  1. Shrinkage or contraction of the protoplasm away from the wall of a living plant or bacterial cell, caused by loss of water through osmosis.
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Related formsplas′mo•lytic (plăz′mə-lĭtĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

plasmolysis in Science

plasmolysis

[plăz-mŏlĭ-sĭs]
Plural plasmolyses (plăz-mŏlĭ-sēz′)
  1. Shrinkage or contraction of the protoplasm away from the wall of a living plant or bacterial cell, caused by loss of water through osmosis. It results in loss of turgor and, in plants, wilting of the stems and leaves. If too severe, it can be fatal to the cell.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.