: anterior to or involving the anterior part of a frontal structure
a prefrontal bone

prefrontal

2 of 2

noun

: a prefrontal part (such as a bone)

Examples of prefrontal in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
The technology-bilingualism argument is neurologically grounded and observationally compelling, but the causal chain from prefrontal developmental timing to technological rupture to career outcomes has not been formally tested. Nick Lichtenberg, Fortune, 3 July 2026 Researchers have shown that when something about an environment is familiar and aligns with your prior experiences, the prefrontal regions of your brain – those responsible for executive functions such as decision-making – become more active. Paulina Maxim, The Conversation, 11 May 2026
Noun
And when people refused to profit from harming others, the prefrontal cortex increased its communication with the striatum. Molly Crockett, Scientific American Blog Network, 15 May 2017 During the adolescent years the prefrontal cortex, the portion of your brain that sits just behind your forehead, is still forming. Molly Lotz, The Denver Post, 14 Apr. 2017 See All Example Sentences for prefrontal

Word History

First Known Use

Adjective

1851, in the meaning defined above

Noun

1851, in the meaning defined above

Time Traveler
The first known use of prefrontal was in 1851

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Cite this Entry

“Prefrontal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/prefrontal. Accessed 31 Jul. 2026.

Medical Definition

prefrontal

adjective
1
: situated or occurring anterior to a frontal structure
a prefrontal bone
2
: of, relating to, or constituting the prefrontal lobe or prefrontal cortex of the brain
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