Meaning of hypertonic

hy•per•ton•ic

Pronunciation: (hī"pur-ton'ik), [key]
— adj.
  1. of or pertaining to hypertonia.
  2. noting a solution of higher osmotic pressure than another solution with which it is compared (opposed to hypotonic). Cf. isotonic (def. 1).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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