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hypotonia

n.

1876, medical Latin, from hypo- + Greek tonos "tone" (see tenet).

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Online Etymology Dictionary, © 2010 Douglas Harper

hypotonia in Medicine

hypotonia

(hī′pō-tōnē-ə)
n.
  1. Reduced tension or pressure, as of the intraocular fluid in the eyeball.
  2. Relaxation of the arteries.
  3. A condition in which there is diminution or loss of muscular tonicity, resulting in stretching of the muscles beyond their normal limits.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.