: a curved or rounded projection or division
specifically : a usually somewhat rounded projection or division of a bodily organ or part

Example Sentences

the frontal lobe of the brain
Recent Examples on the Web Ideally, the left and right lobe should have about the same amount of neuronal activity when a person is at rest. Dan Lyons, Time, 19 Jan. 2023 Because the terrorist in question, one Theo, was a great-grandson of Vincent van Gogh, his grandfather the son of the prostitute to whom Vincent gave the lobe of his ear and, counterfactually, a child. Wyatt Mason, Harper’s Magazine , 6 Jan. 2023 The authors argue that this supports specialization of function within the PFC, but of an unexpected nature, namely ‘a specific frontal-lobe network that is consistently recruited for solution of diverse cognitive problems’. Neuroskeptic, Discover Magazine, 30 Sep. 2010 On June 25, 2021, Jennifer gave her mother a lobe of her liver. Adrienne Broaddus, CNN, 24 Dec. 2022 The famous redhead debuted a two-toned pink lobe on Instagram after filming wrapped for the final installment of the Jurassic World franchise. Charmaine Patterson, Peoplemag, 8 Dec. 2022 Desai said adults can sometimes go to hospitals and offer their kidney, part of a lung, intestines or pancreas, or a lobe of the liver as a living donor. Dallas News, 20 May 2022 There is little data on how prevalent the operation was; however, surgery did become a mainstay of tuberculosis treatment from either plombage, lung deflation (known as pneumothorax), or simply surgical resection of a diseased lobe. Rebecca Kreston, Discover Magazine, 1 May 2015 One lobe stretches down into Canada and the United States, bringing an outbreak of cold weather. Henry Fountain, New York Times, 23 Dec. 2022 See More

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.

Word History


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

Dictionary Entries Near lobe

Cite this Entry

“Lobe.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lobe. Accessed 4 Feb. 2023.

Kids Definition


: a curved or rounded part
especially : one that is part of a bodily organ or part

Medical Definition


: a curved or rounded projection or division: as
: a more or less rounded projection of a body organ or part
the lobe of the ear
: 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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