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isotonicity - 2 dictionary results
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i⋅so⋅ton⋅ic

   [ahy-suh-ton-ik]
–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.
a. noting or pertaining to a solution containing the same salt concentration as mammalian blood.
b. 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:
1820–30; < Gk isóton(os) having equal accent or tone (see iso-, tone ) + -ic
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
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i·so·ton·ic     (ī'sə-tŏn'ĭk)  Pronunciation Key 
adj.  
  1. Of equal tension.
  2. Isosmotic.
  3. Having the same concentration of solutes as the blood: an isotonic saline solution.
  4. Physiology Of or involving muscular contraction in which the muscle remains under relatively constant tension while its length changes.


[iso- + Greek tonos, tension; see tone + -ic.]

i'so·ton'i·cal·ly adv., i'so·to·nic'i·ty (-tə-nĭs'ĭ-tē) n.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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