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hypotonic

American  
[hahy-puh-ton-ik] / ˌhaɪ pəˈtɒn ɪk /

adjective

  1. Physiology. (of tissue) having less than the normal tone.

  2. Physical Chemistry. noting a solution of lower osmotic pressure than another solution with which it is compared (opposed to hypertonic).


hypotonic British  
/ ˌhaɪpəˈtɒnɪk, ˌhaɪpətəˈnɪsɪtɪ /

adjective

  1. pathol (of muscles) lacking normal tone or tension

  2. (of a solution) having a lower osmotic pressure than that of a specified, generally physiological, solution Compare hypertonic isotonic

"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

Other Word Forms

Etymology

Origin of hypotonic

First recorded in 1890–95; hypo- + tonic

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Example Sentences

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In a hypotonic environment, cells tend to swell due to intake of water.

From Textbooks Jun. 9, 2022

In such hypotonic environments, these fish do not drink much water.

From Textbooks Jun. 9, 2022

Some organisms, such as plants, fungi, bacteria, and some protists, have cell walls that surround the plasma membrane and prevent cell lysis in a hypotonic solution.

From Textbooks Jun. 9, 2022

The terms isotonic, hypertonic, and hypotonic refer the “strength,” or concentration, of the sugar solute, not the water.

From Textbooks Jan. 1, 2018

As a result of this aggregation the number of molecules in a given area is diminished, i.e. the concentration and the osmotic pressure fall, producing a hypotonic centre of diffusion.

From The Mechanism of Life by Leduc, Stéphane

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