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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The wearable operates differently from implanted vagus nerve stimulation and was not designed to treat PTSD symptoms in the same direct way. Samantha Agate, Fort Worth Star-Telegram, 13 June 2026 The company’s 2024 internal sleep pilots reported a 39% improvement in sleep-quality scores across four weeks, which Pulsetto attributes to calmer nights driven by vagus nerve stimulation. Samantha Agate, Kansas City Star, 4 June 2026 How Vagus Nerve Stimulation Devices Work The vagus nerve is the largest and longest of the twelve cranial nerves, running from the brainstem to organs throughout the head, neck and body. Samantha Agate, Miami Herald, 4 June 2026 The neural circuitry involved in a hiccup episode includes the vagus nerve, the phrenic nerve, the medulla oblongata and the hypothalamic reticular formation. Scott Travers, Forbes.com, 22 Apr. 2026 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 15 Jun. 2026.

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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