brain stem

noun

: the part of the brain composed of the midbrain, pons, and medulla oblongata and connecting the spinal cord with the forebrain and cerebrum

Examples of brain stem in a Sentence

Recent Examples on the Web
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One of the key players in this connection is the vagus nerve, which runs from your brain stem to your gut and influences functions as varied as heart rate, digestion, mood and emotional regulation. Dana Santas, CNN Money, 14 May 2025 Flores also had a large tumor around her brain stem, which was removed through two separate procedures via her skull and nose, the release stated. Melissa Rudy, FOXNews.com, 9 May 2025 Mann said a trip to the emergency room finally got to the cause—brain stem cancer. Raja Krishnamoorthi, Newsweek, 13 Mar. 2025 The smiley toddler had diffuse intrinsic pontine glioma, or DIPG, a cancer that occurs in the part of the brain stem that controls vital functions including breathing, blood pressure and heart rate. Kaitlin Sullivan, NBC News, 19 Mar. 2025 See All Example Sentences for brain stem

Word History

First Known Use

1874, in the meaning defined above

Time Traveler
The first known use of brain stem was in 1874

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Cite this Entry

“Brain stem.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brain%20stem. Accessed 21 May. 2025.

Kids Definition

brain stem

noun
: the back and lower part of the brain including the midbrain and medulla oblongata

Medical Definition

brain stem

noun
: the part of the brain composed of the midbrain, pons, and medulla oblongata and connecting the spinal cord with the forebrain and cerebrum

More from Merriam-Webster on brain stem

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