Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Overactivity or irritability of the vagus nerve, adversely affecting function of the blood vessels, stomach, and muscles.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. irritability of the vagus nerve that adversely affects the function of the blood vessels, stomach, and muscles

Etymologies

vag(us) + -tonia.
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

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