vagus nerve

noun

va·​gus nerve ˈvā-gəs- How to pronounce vagus nerve (audio)
: either of the 10th pair of cranial nerves that arise from the medulla oblongata and supply chiefly the viscera especially with autonomic sensory and motor fibers

called also vagus

Examples of vagus nerve in a Sentence

Recent Examples on the Web
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Breathwork also activates the vagus nerve, which plays a key role in mood and anxiety regulation. Matthew Kayser, USA Today, 29 Aug. 2025 The vagus nerve is the core nerve of the parasympathetic nervous system that governs all rest and recovery activities of the entire body. Anna Haines, Forbes.com, 29 Aug. 2025 The team found that each vagus nerve fiber connected to only one organ in the gut, rather than branching to many different organs as some had predicted. Nora Bradford, Scientific American, 27 Aug. 2025 This part of the autonomic nervous system is activated by the vagus nerve, which connects the brain to the heart and other organs. Md Published, Verywell Health, 20 Aug. 2025 See All Example Sentences for vagus nerve

Word History

Etymology

borrowed from New Latin vagus nervus, literally, "wandering nerve,"; so called from its multiplicity of connecting points in the neck, thorax, and abdomen — more at vague

First Known Use

1856, in the meaning defined above

Time Traveler
The first known use of vagus nerve was in 1856

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Cite this Entry

“Vagus nerve.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vagus%20nerve. Accessed 10 Sep. 2025.

Medical Definition

vagus nerve

noun
: either of the tenth pair of cranial nerves that arise from the medulla and supply chiefly the viscera especially with autonomic sensory and motor fibers

called also pneumogastric nerve, tenth cranial nerve, vagus

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