: excessive excitability of the vagus nerve resulting typically in vasomotor instability, constipation, and sweating

Word History

Etymology

borrowed from German Vagotonie, from Vagus vagus nerve + -o- -o- + -tonie -tonia

First Known Use

circa 1915, in the meaning defined above

Time Traveler
The first known use of vagotonia was circa 1915

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Cite this Entry

“Vagotonia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vagotonia. Accessed 7 Jul. 2026.

Medical Definition

vagotonia

noun
: excessive excitability of the vagus nerve resulting typically in vasomotor instability, constipation, and sweating compare sympathicotonia
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