Physical Chemistry. noting a solution of higher osmotic pressure than another solution with which it is compared (opposed to hypotonic).Compare isotonic(def 1).
Related formshy·per·to·nic·i·ty [hahy-per-toh-nis-i-tee] /ˌhaɪ pər toʊˈnɪs ɪ ti/, noun
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for hypertonic
Historical Examples of hypertonic
We have seen that a centre of catabolism is a hypertonic focus of diffusion.
Those eggs which form membranes begin to develop, but perish if they are not treated with hypertonic sea-water.
If such eggs are afterwards treated for a short period with hypertonic sea-water they develop into normal larvae (plutei).
Rogers has reduced the mortality of cholera by intravenous injections of hypertonic saline until it is only 15 per cent.
Loeb and Wasteneys found that the hypertonic solution does not increase the rate of oxidations in a fertilized egg.
British Dictionary definitions for hypertonic
Derived Formshypertonicity (ˌhaɪpətəʊˈnɪsɪtɪ), noun
(esp of muscles) being in a state of abnormally high tension
(of a solution) having a higher osmotic pressure than that of a specified, generally physiological, solutionCompare hypotonic, isotonic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for hypertonic
1855, from hyper- + tonic. Related: Hypertonia; hypertonicity.
Online Etymology Dictionary, © 2010 Douglas Harper
Related formshy′per•to•nic′i•ty (-tə-nĭs′ĭ-tē, -tō-) n.
Having extreme muscular or arterial tension; spastic.
Having the higher osmotic pressure of two solutions.
The American Heritage® Stedman's Medical Dictionary
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