frontal lobe

noun

: the anterior division of each cerebral hemisphere

Examples of frontal lobe in a Sentence

Recent Examples on the Web
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The freak accident cracked the then-15-year-old’s eye socket and sent debris into his brain, which took out part of his right frontal lobe. Sam Gillette, PEOPLE, 9 June 2026 The frontal lobe, which plays a major role in working memory, depends on sleep to function properly. Stephanie Anderson Witmer, Health, 8 June 2026 Our bodies could then invest the surplus energy this saved into ganglia rather than guts, into frontal lobes instead of food. Big Think, 22 Apr. 2026 The frontal lobe occupies about 40% of the brain, was the last to evolve, and is much larger than that of our nonhuman primate relatives. Anand Kumar, STAT, 21 Apr. 2026 See All Example Sentences for frontal lobe

Word History

First Known Use

1827, in the meaning defined above

Time Traveler
The first known use of frontal lobe was in 1827

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Cite this Entry

“Frontal lobe.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/frontal%20lobe. Accessed 15 Jun. 2026.

Medical Definition

frontal lobe

noun
: the anterior division of each cerebral hemisphere having its lower part in the anterior fossa of the skull and bordered behind by the central sulcus

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