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irritability of the vagus nerve, characterized by vasomotor instability, sweating, disordered peristalsis, and muscle spasms. adj., adj vagoton´ic.
Archaic designation for a condition in which the parasympathetic autonomic system is reputedly overactive.
[vago- + G. tonos, strain]
Overactivity or irritability of the vagus nerve, adversely affecting function of the blood vessels, stomach, and muscles.
va′go·ton′ic (-tŏn′ĭk) adj.