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1. Reduced tension in any part, as in the eyeball. 2. Relaxation of the arteries. 3. A condition in which there is a diminution or loss of muscular tonicity. SYN: hypotonicity (1), hypotonus, hypotony. [hypo- + G. tonos, tone]
- benign congenital h. nonprogressive h. of unknown etiology in infants and children; other known causes of hyptonia must be excluded.
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hy·po·to·nia .hī-pə-'tō-nē-ə, -pō- n
1) abnormally low pressure of the intraocular fluid
2) the state of having hypotonic muscle tone
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n.
a state of reduced tension in muscle.
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hy·po·to·nia (hi″po-toґne-ə) [hypo- + ton- + -ia] a condition of diminished tone of the skeletal muscles, so that they have diminished resistance to passive stretching and are flaccid; this usually means the nerve supply is compromised. See also atony.
Hypotonia with severe head lag and failure of limbs to flex to counter the upward traction.
Medical dictionary. 2011.