PROTUBERANCE Synonyms: 61 Similar and Opposite Words

Q: How is the word 'protuberance' different from other nouns like it?

Some common synonyms of protuberance are bulge , projection , and protrusion . While all these words mean "an extension beyond the normal line or surface," protuberance implies a growing or swelling out in rounded form. // a skin disease marked by warty protuberances

Q: When is 'bulge' a more appropriate choice than 'protuberance'?

The synonyms bulge and protuberance are sometimes interchangeable, but bulge suggests an expansion caused by internal pressure. // bulges in the tile floor

Q: When could 'projection' be used to replace 'protuberance'?

In some situations, the words projection and protuberance are roughly equivalent. However, projection implies a jutting out especially at a sharp angle. // those projections along the wall are safety hazards

Q: In what contexts can 'protrusion' take the place of 'protuberance'?

The words protrusion and protuberance are synonyms, but do differ in nuance. Specifically, protrusion suggests a thrusting out so that the extension seems a deformity. // the bizarre protrusions of a coral reef

protuberance

noun

prō-ˈtü-b(ə-)rən(t)s

Definition of protuberance

as in projection

a part that sticks out from the general mass of something the tree trunk had several mossy protuberances where branches had once grown

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How is the word protuberance different from other nouns like it?

Some common synonyms of protuberance are bulge, projection, and protrusion. While all these words mean "an extension beyond the normal line or surface," protuberance implies a growing or swelling out in rounded form.

a skin disease marked by warty protuberances

When is bulge a more appropriate choice than protuberance?

The synonyms bulge and protuberance are sometimes interchangeable, but bulge suggests an expansion caused by internal pressure.

bulges in the tile floor

When could projection be used to replace protuberance?

In some situations, the words projection and protuberance are roughly equivalent. However, projection implies a jutting out especially at a sharp angle.

those projections along the wall are safety hazards

In what contexts can protrusion take the place of protuberance?

The words protrusion and protuberance are synonyms, but do differ in nuance. Specifically, protrusion suggests a thrusting out so that the extension seems a deformity.

the bizarre protrusions of a coral reef

Example Sentences

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.

Recent Examples of protuberance When cells produce proteins, the amino acids spontaneously fold into tangled and twisted structures, with pockets and protuberances, and sometimes long, trailing tails. — Jeremy Kahn, Fortune, 28 Nov. 2025 In the far distance lies the Pacific Ocean, and beyond that, featureless protuberances labeled Japan, Russia and China. — Matthew Carey, Deadline, 1 Sep. 2025 Above the central display is a ventilative protuberance sporting a pair of menacing ambient lights. — Brett Berk, Robb Report, 19 Aug. 2025 Violet-blue protuberances are surrounded by what look like thorns but are actually soft, if jagged, flower parts. — Joshua Siskin, Orange County Register, 14 Mar. 2025 See All Example Sentences for protuberance

Recent Examples of Synonyms for protuberance

Noun

The team used projections of emissions throughout the life cycle of batteries used for electric vehicles (EVs) and energy storage through 2050.

— Scott K. Johnson, ArsTechnica, 19 Oct. 2026
By 2045, in some projections, a plurality of English readers will live in China.

— Nathan Heller, New Yorker, 19 Oct. 2026

Definition of projection

Noun

Moments later, Jay is trapped inside, surrounded by gooey protrusions of undulating flesh.

— Owen Gleiberman, Variety, 14 Oct. 2026
Despite their pointy protrusions, the sculptures are not spiky enough to leave a mark; and despite their flirtations with touchy subject matter, none of the works—not even the 9/11 ones—are vulgar enough to get Wolfson in hot water.

— Alex Greenberger, ARTnews.com, 23 Sep. 2026

Definition of protrusion

Noun

And as the South African writer Jakkie Cilliers argued in these pages, Africa’s youth bulge will only be an asset if young people in the coming decades have access to education, formal employment, and functioning institutions.

— Jared Cohen, Foreign Affairs, 7 Oct. 2026
When the solid Earth tips out of alignment, it is driven through the watery bulge, and parts of the rock poke out of the water while others get drowned.

— Jacek Krywko, Scientific American, 1 Oct. 2026

Definition of bulge

Noun

The frack happening beneath us was about half as deep as Mount Everest is high, in a section of oil-rich rock that used to be considered out of reach; other innovations allow for simultaneous fracks, minimizing downtime.

— Tim McDonnell, semafor.com, 22 Oct. 2026
Muchnick said his seats, in section 144, jumped from $3430 this season to $3795 next season.

— Barry Jackson, Miami Herald, 21 Oct. 2026

Definition of section

Noun

Rocket Lab still needs to build a new forward dome, then cure and inspect it — steps that are expected to be complete by the end of the year, according to Beck.

— Mike Wall, Space.com, 16 Oct. 2026
Scaling up Engineers discovered voids, or air pockets, between layers of carbon fiber that make up the domes’ composite structure.

— Stephen Clark, ArsTechnica, 15 Oct. 2026

Definition of dome

Noun

Today, convexity, which can be more expensive, is used earlier and some experts recommend a convexity-first approach after ostomy surgery.

— Diego Schaps, STAT, 1 Apr. 2026
The tower flaunts its partnership with the Dime Savings Bank, sending the 1908 landmark’s geometrical exuberance rocketing upward in a play of convexities and concavities, glass and trim, darkness and gleam.

— Justin Davidson, Curbed, 28 Jan. 2026

Definition of convexity

Noun

California did not experience any rain or wind before massive swells overtook Laguna Beach, where a portion of the PCH remains closed as sections crack and slide down toward the ocean.

— Alicia Victoria Lozano, NBC news, 17 Oct. 2026
Surf was even less accessible, dependent on coastline and a lucky swell.

— Robb Report Studio, Robb Report, 15 Oct. 2026

Definition of swell

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protuberance

protuberances

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“Protuberance.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/protuberance. Accessed 25 Oct. 2026.

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Synonyms of protuberance

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