lobe

noun

: 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
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.
Not until at age 89: she was diagnosed with frontotemporal lobe dementia. Carol Sutton Lewis, Scientific American, 18 June 2025 The cargo bay and 19-passenger gondola are located on the underside of the central lobe, while the lower side lobes feature the unique Air Cushion Landing System fans that add serious versatility to the Z1's operation. New Atlas, 13 Mar. 2025 To identify the plant, Kaufmann recommends looking for a notch or lobe that is sometimes found on one side of the oblong leaflets with smooth margins. Patricia Shannon, Southern Living, 17 June 2025 The Blades The incisions are many and have come at every limb and lobe of higher education. David Rosowsky, Forbes.com, 13 June 2025 See All Example Sentences for lobe

Word History

Etymology

Middle French, from Late Latin lobus, from Greek lobos

First Known Use

1541, in the meaning defined above

Time Traveler
The first known use of lobe was in 1541

Browse Nearby Words

Cite this Entry

“Lobe.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lobe. Accessed 23 Jul. 2025.

Kids Definition

lobe

noun
: a curved or rounded part
especially : one that is part of a bodily organ or part
lobed
ˈlōbd
adjective

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

More from Merriam-Webster on lobe

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