prefrontal cortex

noun

: the gray matter of the anterior part of the frontal lobe that is highly developed in humans and plays a role in the regulation of complex cognitive, emotional, and behavioral functioning

Examples of prefrontal cortex in a Sentence

Recent Examples on the Web
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In rodent experiments, both molecules promote dendritic growth in the prefrontal cortex. Clayton Dalton, New Yorker, 13 Mar. 2026 One of the things that distinguishes human beings from most other animals is the prefrontal cortex, a section of the brain concerned with learning, reasoning and problem-solving (among other things). Dr. Deepika Chopra, Flow Space, 10 Mar. 2026 Neurochemically, the drug works by causing a decrease in activity in the amygdala — the brain structure associated with memory formation — and an increase in activity in the prefrontal cortex — the brain region where cognitive functions are processed, including ethical judgments. Erica Rex, STAT, 19 Feb. 2026 It is integrated into other brain regions, most notably those that lay down memories (the hippocampus) and interpret outcomes (the prefrontal cortex). Literary Hub, 13 Feb. 2026 See All Example Sentences for prefrontal cortex

Word History

First Known Use

1892, in the meaning defined above

Time Traveler
The first known use of prefrontal cortex was in 1892

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Cite this Entry

“Prefrontal cortex.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/prefrontal%20cortex. Accessed 18 Mar. 2026.

Medical Definition

prefrontal cortex

noun
: the gray matter of the anterior part of the frontal lobe that is highly developed in humans and plays a role in the regulation of complex cognitive, emotional, and behavioral functioning
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