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isotonic

[ahy-suh-ton-ik] /ˌaɪ səˈtɒn ɪk/
adjective
1.
Also, isosmotic. Physical Chemistry. noting or pertaining to solutions characterized by equal osmotic pressure.
Compare hypertonic (def 2), hypotonic (def 2).
2.
Physiology.
  1. noting or pertaining to a solution containing the same salt concentration as mammalian blood.
  2. noting or pertaining to a muscular contraction in which constant tension continues while the length of the muscle decreases, as during mechanical work.
3.
Music. of or characterized by equal tones.
Origin
1820-1830
1820-30; < Greek isóton(os) having equal accent or tone (see iso-, tone) + -ic
Related forms
isotonicity
[ahy-suh-tuh-nis-i-tee] /ˌaɪ sə təˈnɪs ɪ ti/ (Show IPA),
noun
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for isotonicity

isotonic

/ˌaɪsəʊˈtɒnɪk/
adjective
1.
(physiol) (of two or more muscles) having equal tension
2.
(of a drink) designed to replace the fluid and salts lost from the body during strenuous exercise
3.
Also isosmotic. (of two solutions) having the same osmotic pressure, commonly having physiological osmotic pressure Compare hypertonic, hypotonic
4.
(music) of, relating to, or characterized by the equal intervals of the well-tempered scale isotonic tuning
Derived Forms
isotonicity (ˌaɪsəʊtəʊˈnɪsɪtɪ) noun
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
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Word Origin and History for isotonicity

isotonic

adj.

1828, from Greek isotonos "of level pitch; equally stretched," from iso- (see iso-) + tonos (see tenet).

Online Etymology Dictionary, © 2010 Douglas Harper
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isotonicity in Medicine

isotonic i·so·ton·ic (ī'sə-tŏn'ĭk)
adj.

  1. Of equal tension.

  2. Isosmotic.

  3. Having the same concentration of solutes as the blood.

  4. Of or involving muscular contraction in which the muscle remains under relatively constant tension while its length changes.


i'so·to·nic'i·ty (-tə-nĭs'ĭ-tē) n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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