: 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
Zoom out: In the troposphere, at about the same height that jet aircraft cruise, a lobe or multiple pieces of ultra-cold air may enter the U.S. while rotating around Hudson Bay, Canada.
—
Andrew Freedman, Axios, 16 Jan. 2025
Sometimes, the Arctic polar vortex wobbles and a lobe surges south, blanketing parts of North America with bitter temperatures.
—NBC News, 6 Jan. 2025
Pneumonia affecting the lower lobes of the left lung can especially cause pain under the left rib.37
Aortic aneurysm: An aortic aneurysm is a balloon-like bulge in the wall of the aorta, the large artery that carries blood from the heart to the chest and torso.
—Lindsay Curtis, Health, 22 Dec. 2024
The possibility still exists of a lobe, or piece, of the tropospheric polar vortex diving south from Canada and into the South and Southeast, sending temperatures plunging well below the levels currently forecast.
—Andrew Freedman, Axios, 2 Jan. 2025
See all Example Sentences for lobe 
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Andrew Freedman, Axios, 16 Jan. 2025
Sometimes, the Arctic polar vortex wobbles and a lobe surges south, blanketing parts of North America with bitter temperatures.
—NBC News, 6 Jan. 2025
Pneumonia affecting the lower lobes of the left lung can especially cause pain under the left rib.37
Aortic aneurysm: An aortic aneurysm is a balloon-like bulge in the wall of the aorta, the large artery that carries blood from the heart to the chest and torso.
—Lindsay Curtis, Health, 22 Dec. 2024
The possibility still exists of a lobe, or piece, of the tropospheric polar vortex diving south from Canada and into the South and Southeast, sending temperatures plunging well below the levels currently forecast.
—Andrew Freedman, Axios, 2 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 23 Jan. 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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