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hypertonic

American  
[hahy-per-ton-ik] / ˌhaɪ pərˈtɒn ɪk /

adjective

  1. Physiology. of or relating to hypertonia.

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


hypertonic British  
/ ˌhaɪpəˈtɒnɪk /

adjective

  1. (esp of muscles) being in a state of abnormally high tension

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

First recorded in 1850–55; hyperton(ia) + -ic


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Vocabulary lists containing hypertonic

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Andrew has hypertonic cerebral palsy, which means he suffers from tightening muscles and regular spasms.

From BBC ● Apr. 22, 2024

Figure 32.2 Cells placed in a hypertonic environment tend to shrink due to loss of water.

From Textbooks ● Jun. 9, 2022

Saltwater fish live in the reverse environment, which is hypertonic to their cells, and they secrete salt through their gills and excrete highly concentrated urine.

From Textbooks ● Jun. 9, 2022

In a hypertonic solution, water leaves a cell and the cell shrinks.

From Textbooks ● Jun. 9, 2022

On the right a grain of salt forming a hypertonic pole of concentration, on the left a drop of blood forming a hypotonic pole of dilution.

From The Mechanism of Life by Stéphane Leduc

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