: a curved or rounded projection or division
specifically
: a usually somewhat rounded projection or division of a bodily organ or part
Examples of lobe in a Sentence
the frontal lobe of the brain
Recent Examples on the Web
Not only is one shorter than the other, but one jet lobe is brighter than its counterpart.
—
Robert Lea, Space.com, 6 Feb. 2025
Twin lobes of super-hot gas, glowing blue in this image, stretch outward from the central star.
—Alan Taylor, The Atlantic, 21 Dec. 2024
The thinning was found to be widespread throughout the female brain, occurring in 30 regions across both hemispheres and all lobes, the scans showed.
—Patrick Martin, NBC News, 9 Sep. 2024
The Die Hard actor is currently battling frontotemporal dementia (FTD), which, according to Mayo Clinic can cause the lobes in the brain to shrink, affecting behavior, language, and more.
—Michael Gfoeller and David H. Rundell, Newsweek, 16 Jan. 2025
See all Example Sentences for lobe 
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Robert Lea, Space.com, 6 Feb. 2025
Twin lobes of super-hot gas, glowing blue in this image, stretch outward from the central star.
—Alan Taylor, The Atlantic, 21 Dec. 2024
The thinning was found to be widespread throughout the female brain, occurring in 30 regions across both hemispheres and all lobes, the scans showed.
—Patrick Martin, NBC News, 9 Sep. 2024
The Die Hard actor is currently battling frontotemporal dementia (FTD), which, according to Mayo Clinic can cause the lobes in the brain to shrink, affecting behavior, language, and more.
—Michael Gfoeller and David H. Rundell, Newsweek, 16 Jan. 2025
See all Example Sentences for lobe
Dictionary Entries Near lobe
Cite this Entry
“Lobe.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lobe. Accessed 16 Feb. 2025.
Copy CitationKids Definition
lobe
noun
: a curved or rounded part
especially
: one that is part of a bodily organ or part
lobed
adjective
ˈlōbd
Medical Definition
lobe
noun
: a curved or rounded projection or division: as
a
: a more or less rounded projection of a body organ or part
the lobe of the ear
b
: a division of a body organ (as the brain, lungs, or liver) marked off by a fissure on the surface
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