Physiology. (of tissue) having less than the normal tone.
Physical Chemistry. noting a solution of lower osmotic pressure than another solution with which it is compared (opposed to hypertonic).Compare isotonic(def 1).
Origin of hypotonic
Related formshy·po·to·nic·i·ty [hahy-poh-toh-nis-i-tee] /ˌhaɪ poʊ toʊˈnɪs ɪ ti/, noun
First recorded in 1890–95; hypo-
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for hypotonic
Historical Examples of hypotonic
In a hypotonic solution they swell up and burst, the hmoglobin dissolving in the liquid and colouring it red.
Under the influence of such a hypotonic solution the dry cells rapidly swell up, burst, and are dissolved.
It gains weight in a hypotonic solution, the water current setting towards the point of higher concentration.
A bipolar field has a hypertonic pole or centre of concentration, and a hypotonic pole or centre of dilution.
We have thus two poles of diffusion of contrary signs, a hypotonic pole at the water drop, and a hypertonic pole at the salt drop.
British Dictionary definitions for hypotonic
Derived Formshypotonicity (ˌhaɪpətəˈnɪsɪtɪ), noun
pathol (of muscles) lacking normal tone or tension
(of a solution) having a lower osmotic pressure than that of a specified, generally physiological, solutionCompare hypertonic, 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 hypotonic
Online Etymology Dictionary, © 2010 Douglas Harper
Related formshy′po•to•nic′i•ty (-tə-nĭs′ĭ-tē) n.
Having less than normal tone or tension, as of muscles or arteries.
Having a lower osmotic pressure than a reference solution.
The American Heritage® Stedman's Medical Dictionary
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