isotonic

[ahy-suh-ton-ik]

adjective

1. Physical Chemistry.,  Also noting or pertaining to solutions characterized by equal osmotic pressure.

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.

isotonic

/ ˌaɪsəʊˈtɒnɪk, ˌaɪsəʊtəʊˈnɪsɪtɪ /

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

Other Word Forms

• isotonicity noun

Word History and Origins

Origin of isotonic¹

1820–30; < Greek isóton ( os ) having equal accent or tone ( iso-, tone ) + -ic

Example Sentences

Once the high-tech whiteboard work was done they walked through their new move in a hotel conference room, with bottles of beer, rather than isotonic, at hand.

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Donations continue to arrive with isotonic drinks, food, bandages and basic medical supplies dropped off by a constant stream of pick-up trucks and hatchbacks.

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The 21-year-old American's star power sells watches, isotonic drinks and sportswear as brands anticipate her impact on the greatest stage.

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A good time for the referee to call for isotonic beverages.

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A free bottle of calming isotonic pop, though, so it’s swings and roundabouts.

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