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Meaning of hypotonic

hy•po•ton•ic

Pronunciation: (hī"pu-ton'ik), [key]
— adj.
  1. (of tissue) having less than the normal tone.
  2. noting a solution of lower osmotic pressure than another solution with which it is compared (opposed to hypertonic). Cf. isotonic (def. 1).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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