\ˈlōb \

Definition of lobe 

: 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

These involved nearly half of all electrodes and occurred in all lobes and both hemispheres of patients’ brains. Simon Makin, Scientific American, "“Traveling” Brain Waves May Be Critical for Cognition," 28 June 2018 But only celebrity babies' lobes have the power to ignite an Internet debate about the safety of body jewelry for youngsters. Carly Mallenbaum, USA TODAY, "Kylie Jenner and Stormi spark debate: How old must a baby be before getting pierced ears?," 12 July 2018 The acquisition put Lilis in the Delaware Basin, the less developed western lobe of the Permian that extends into New Mexico. Jordan Blum, San Antonio Express-News, "Lilis may be an acquisition target," 13 July 2018 But when a baby suckles a mom’s breasts, the mother’s brain’s posterior lobe secretes oxytocin, and some of that pain is relieved with the release of milk. Julia Belluz, Vox, "Separating breastfeeding children from mothers is exceptionally cruel," 15 June 2018 Moth tails vary from species to species: Some have big lobes at the bottom of the hindwing instead of a distinctive tail; others have just a short protrusion. Elizabeth Pennisi, Science | AAAS, "Watch how battles with bats give moths their flashy tails," 4 July 2018 Cownose rays have a unique feature: long, pointed pectoral fins that separate into two lobes in front of their high-domed heads. The Kansas City Zoo, kansascity, "New Stingray Bay Touch Tank Exhibit Now Open at KC Zoo (Sponsored)," 27 June 2018 With their deep lobes and complex patterns, its huge leaves may be as much as five feet across. Martin Weil, Washington Post, "Huge, toxic weed found for first time in Virginia, experts say," 19 June 2018 Now, watching creeping lobes of molten rock slowly wipe out entire neighborhoods over the past month, she has been transported back to those losses. CBS News, "Hawaii homeowners describe despair after lava destroys hundreds of homes," 15 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'lobe.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of lobe

1541, in the meaning defined above

History and Etymology for lobe

Middle French, from Late Latin lobus, from Greek lobos

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Statistics for lobe

Last Updated

21 Sep 2018

Look-up Popularity

Time Traveler for lobe

The first known use of lobe was in 1541

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More Definitions for lobe



English Language Learners Definition of lobe

: a curved or rounded part of something (such as a leaf or a part of the body)


\ˈlōb \

Kids Definition of lobe

: a rounded part a lobe of a leaf the lobe of the ear

Other Words from lobe

lobed \ˈlōbd \ adjective


\ˈlōb \

Medical Definition of lobe 

: 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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Comments on lobe

What made you want to look up lobe? Please tell us where you read or heard it (including the quote, if possible).


one that holds something together

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