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Definition of brainstem

brainstem

/ˈbreɪn.stɛm/
brain · stem
Plural:brainstems
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brainstem Lexical Profile

brainstem Game Scores & Validity

• noun

1

The central, stalk-like lower portion of the brain that connects the cerebrum with the spinal cord, consisting of the midbrain, pons, and medulla oblongata, and regulating vital autonomic functions such as breathing and heart rate.

Example

"Damage to the brainstem can severely disrupt involuntary bodily functions like respiration and blood pressure control."

• Nearby Words

brainlessness
brainpower
brains
brainstem
brainstorm
brainstormer
brainstorming

Word Origin & Etymology

Coined in the late 19th century as a compound of "brain" and "stem," probably modeled on the German anatomical term "Hirnstamm."

Cite this Entry

Wordmom. (2026). Definition of Brainstem. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/brainstem
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