pro·​tu·​ber·​ance | \ prō-ˈtü-b(ə-)rən(t)s How to pronounce protuberance (audio) , -ˈtyü- \

Definition of protuberance

1 : something that is protuberant
2 : the quality or state of being protuberant

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Choose the Right Synonym for protuberance

projection, protrusion, protuberance, bulge mean an extension beyond the normal line or surface. projection implies a jutting out especially at a sharp angle. those projections along the wall are safety hazards protrusion suggests a thrusting out so that the extension seems a deformity. the bizarre protrusions of a coral reef protuberance implies a growing or swelling out in rounded form. a skin disease marked by warty protuberances bulge suggests an expansion caused by internal pressure. bulges in the tile floor

Examples of protuberance in a Sentence

the tree trunk had several mossy protuberances where branches had once grown
Recent Examples on the Web The presence of this protuberance encouraged the wind to pass around it, reinforcing its tendency to dig more deeply closer to the rim, hollowing out a doughnut trench. The Economist, "Extraterrestrial hiking Following the tracks of NASA’s Curiosity rover," 16 Dec. 2020 Henry VIII remains the poster boy for codpieces, those profane protuberances that drew eyes crotchward in the sixteenth century. Dan Piepenbring, The New Yorker, "A Brief History of the Codpiece, the Personal Protection for Renaissance Equipment," 23 May 2020 And third, create as much downforce as possible without getting crazy with drag-inducing wings and protuberances. Jim Resnick, Ars Technica, "The mid-engined Corvette was 60 years in the making—now we’ve driven it," 25 Feb. 2020 Those images showed huge, flame-like protuberances of dust arcing out from the limb of Betelgeuse. Dennis Overbye, New York Times, "The Further Adventures of Betelgeuse, the Fainting Star," 14 Feb. 2020 Officials also are interested in any signs of two viruses that have appeared in turkeys in recent years, with symptoms including warty protuberances in the head and eye area. USA TODAY, "Tombstone gunfight, sparkler spoiler, no superbloom: News from around our 50 states," 18 Feb. 2020 The tropical hibiscus produces some of the most lurid blossoms in the garden — a broad, ruffled, flared collar around a central antenna full of knobbly, nectar-rich protuberances. Adrian Higgins, Washington Post, "The sultry plant that will break your heart," 13 Aug. 2019 Find the places where elk, deer, and moose spend the winter, then comb the terrain for the pointy protuberances that naturally drop off the animals. Mike Koshmrl, National Geographic, "What it takes to catch antler thieves," 19 July 2019 The bone spurs jut off of what’s called the external occipital protuberance (EOP) of the skull. Beth Mole, Ars Technica, "Debunked: The absurd story about smartphones causing kids to sprout horns," 21 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'protuberance.' 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 protuberance

1646, in the meaning defined at sense 1

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Time Traveler for protuberance

Time Traveler

The first known use of protuberance was in 1646

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Statistics for protuberance

Cite this Entry

“Protuberance.” Dictionary, Merriam-Webster, Accessed 19 Apr. 2021.

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More Definitions for protuberance



English Language Learners Definition of protuberance

: a usually rounded part that sticks out from a surface


pro·​tu·​ber·​ance | \ prō-ˈt(y)ü-b(ə-)rən(t)s How to pronounce protuberance (audio) \

Medical Definition of protuberance

1 : something that is protuberant a bony protuberance
2 : the quality or state of being protuberant

More from Merriam-Webster on protuberance

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Nglish: Translation of protuberance for Spanish Speakers

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