frontal lobe

noun

: the anterior division of each cerebral hemisphere

Examples of frontal lobe 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.
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 In fact, many teens seem to have deep concerns over AI chatbots rotting their frontal lobes. Joe Wilkins, Futurism, 16 Apr. 2026 Venus and Pluto’s clash pushes someone front and center in your frontal lobe. Usa Today, USA Today, 3 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

Browse Nearby Words

Cite this Entry

“Frontal lobe.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/frontal%20lobe. Accessed 25 Apr. 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

More from Merriam-Webster on frontal lobe

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster