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

Example Sentences

Recent Examples on the Web These groups of neurons reside in a part of the brain called the hypothalamus, and another region called the brain stem, areas that were already known to regulate sleep, mood and appetite. Gretchen Cuda Kroen, cleveland, 6 Nov. 2022 The operation went well, but the next day, a blood clot caused by the procedure cut off oxygen to his brain stem, leaving him paralyzed and unable to speak. Megan Molteni, STAT, 10 Nov. 2022 The blow to the now-17-year-old Jordan's head left him with a rare brain stem injury that kept him in the hospital for nearly six months, unable to blink his eyes or breathe on his own. Johnny Dodd, Peoplemag, 21 Oct. 2022 He was diagnosed with a medulloblastoma -- a tumor located on the brain stem -- at the age of four and underwent chemotherapy for the next two years until the cancer went into complete remission. Evan Dudley, al, 7 Oct. 2022 In the blue whale, this process reaches astonishing proportions—spinal cord axons can extend 24 meters in length from brain stem to tail. Jeffrey M. Rodgers, Scientific American, 29 Sep. 2022 The bullet missed Rodriguez’s brain stem and carotid artery by 2 centimeters but shattered his jaw, the order said. Tonya Alanez, BostonGlobe.com, 5 Aug. 2022 The 23-year-old Wayland native was at Brigham and Women’s Hospital, battling a quickly growing lesion on her brain stem. Kat Cornetta, BostonGlobe.com, 5 July 2022 The reactivation of the zoster virus in the nerves of the face causes paralysis because of the facial nerve that travels from the brain stem behind the ear and into the face to give facial muscles the energy for movement. Gil Kaufman, Billboard, 16 June 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'brain stem.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1874, in the meaning defined above

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

Dictionary Entries Near brain stem

Cite this Entry

“Brain stem.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brain%20stem. Accessed 9 Dec. 2022.

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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