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2 definitions found
 for tonicity
From The Collaborative International Dictionary of English v.0.48 :

  Tonicity \To*nic"i*ty\, n. (Physiol.)
     The state of healthy tension or partial contraction of muscle
     fibers while at rest; tone; tonus.
     [1913 Webster]

From WordNet (r) 3.0 (2006) :

      n 1: the elastic tension of living muscles, arteries, etc. that
           facilitate response to stimuli; "the doctor tested my
           tonicity" [syn: tonicity, tonus, tone] [ant:
           amyotonia, atonia, atonicity, atony]

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