PROTRUSION Synonyms: 61 Similar and Opposite Words

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

Some common synonyms of protrusion are bulge , projection , and protuberance . While all these words mean "an extension beyond the normal line or surface," protrusion suggests a thrusting out so that the extension seems a deformity. // the bizarre protrusions of a coral reef

Q: When is it sensible to use 'bulge' instead of 'protrusion'?

The meanings of bulge and protrusion largely overlap; however, bulge suggests an expansion caused by internal pressure. // bulges in the tile floor

Q: When is 'projection' a more appropriate choice than 'protrusion'?

The synonyms projection and protrusion are sometimes interchangeable, but projection implies a jutting out especially at a sharp angle. // those projections along the wall are safety hazards

Q: When would 'protuberance' be a good substitute for 'protrusion'?

The words protuberance and protrusion can be used in similar contexts, but protuberance implies a growing or swelling out in rounded form. // a skin disease marked by warty protuberances

protrusion

noun

prō-ˈtrü-zhən

Definition of protrusion

as in projection

a part that sticks out from the general mass of something the bizarrely shaped protrusions of a coral reef

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

Some common synonyms of protrusion are bulge, projection, and protuberance. While all these words mean "an extension beyond the normal line or surface," protrusion suggests a thrusting out so that the extension seems a deformity.

the bizarre protrusions of a coral reef

When is it sensible to use bulge instead of protrusion?

The meanings of bulge and protrusion largely overlap; however, bulge suggests an expansion caused by internal pressure.

bulges in the tile floor

When is projection a more appropriate choice than protrusion?

The synonyms projection and protrusion are sometimes interchangeable, but projection implies a jutting out especially at a sharp angle.

those projections along the wall are safety hazards

When would protuberance be a good substitute for protrusion?

The words protuberance and protrusion can be used in similar contexts, but protuberance implies a growing or swelling out in rounded form.

a skin disease marked by warty protuberances

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 protrusion Officially, these prominent bumper protrusions were inspired by jet-age design and missile imagery. — Peter Lyon, Forbes.com, 18 June 2026 Prolapse or protrusion of hemorrhoids don’t go back in. — Tom Gavin, EverydayHealth.com, 29 Apr. 2026 The long stretch between Northern and Central Virginia is the lobster’s body, while its protrusions into Central and Western Virginia resemble its claws. — Phillip M. Bailey, USA Today, 21 Apr. 2026 An unnoticed protrusion on the floor she’s dragged across renders her injury considerably worse, turning temporary acute discomfort into a real medical emergency. — Dennis Harvey, Variety, 14 Mar. 2026 See All Example Sentences for protrusion

Recent Examples of Synonyms for protrusion

Noun

Meanwhile, eight games into the 2025 season, after the Hurricanes lost twice in a three-game span to fall to 6-2, projections gave Cristobal’s team just a 5% chance to make the postseason field.

— Jordan McPherson, Miami Herald, 16 July 2026
As production volumes escalate, the facility’s footprint is structured to expand dynamically, with projections indicating the creation of up to 300 technical and advanced manufacturing roles to sustain the regional defense industrial base.

— Aman Tripathi, Interesting Engineering, 15 July 2026

Definition of projection

Noun

As does the Buddha’s Hand, a pulp-less lemon with fragrant, yellowy finger-like protuberances best for zesting, candying, and making infusions for teas, simple syrups, marinades, and libations.

— Catharine Kaufman, San Diego Union-Tribune, 12 Apr. 2026
Described as bright green with small protuberances on its back, the frog belongs to the Gastrotheca genus, a group of marsupial frogs found in Central and South America.

— Hanna Wickes, Charlotte Observer, 5 Apr. 2026

Definition of protuberance

Noun

Alberto Briseno, a section chief for ICE's Homeland Security Investigations, wrote in a declaration that ICE personnel deleted the file after it was discovered and it was not used for law enforcement purposes.

— Jude Joffe-Block, NPR, 17 July 2026
There was disappointment among sections of the fanbase that Neave was not given more of an opportunity over the run-in, especially given how Woltemade and Wissa struggled.

— Chris Waugh, New York Times, 17 July 2026

Definition of section

Noun

The National Weather Service said cool air from the north will push the heat dome, responsible for a heat wave that started midweek, south and west in the coming days, relieving some of the most extreme temperatures in the Northeast.

— Dennis Romero, NBC news, 5 July 2026
The East Coast is expected to soon feel some relief from the extreme temperatures as the heat dome shrinks, bringing chances of severe thunderstorms.

— Karissa Waddick, USA Today, 5 July 2026

Definition of dome

Noun

While the overhang on BlackRock this year has been private credit exposure, this is a strong set of numbers.

— Jim Cramer, CNBC, 15 July 2026
Run a knife or offset spatula around edge of pan to loosen treats, lift from pan using parchment overhang as handles, and cut evenly into 24 bars.

— Erin Merhar, Southern Living, 13 July 2026

Definition of overhang

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

James McConnell The 21-year-old central midfielder returned to action at the end of last season, playing for the under-21s and training with the first team after an injury kept him out of action for a large portion of the campaign.

— Andy Jones, New York Times, 14 July 2026
Students are expected to return to the building when classes begin in August, although portions of the project will continue through most of November.

— Dillon Thomas, CBS News, 14 July 2026

Definition of portion

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protruding

protrusion

protrusions

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“Protrusion.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/protrusion. Accessed 19 Jul. 2026.

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Synonyms of protrusion

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