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

Synonyms & Similar Words

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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 McCoy lives with severe spinal curvature disorder and a chest protrusion caused by a childhood surgery. — Zachary Bynum, CBS News, 6 Aug. 2026 Above the roofs, like an alien protrusion, the lights on a faraway derrick flickered. — Literary Hub, 3 Aug. 2026 Burls are sound, hard, woody swellings or protrusions that form on the trunks, branches, or roots of trees. — Pamm Cooper, Hartford Courant, 25 July 2026 Visitors may have noticed that Odorysseus’ spadix — the conic protrusion emerging upward from the plant — was much taller than Odora’s, which had caved in. — Emily Tarinelli, Los Angeles Times, 14 July 2026 See All Example Sentences for protrusion

Recent Examples of Synonyms for protrusion

Noun

The ordinance permits Highfill to apply excess bond proceeds to retire debt early if construction costs come in below projections, and the city holds the option to call and prepay bonds without penalty starting June 1, 2033.

— Randy Moll, Arkansas Online, 26 Oct. 2026
And then people view his refusal of this projection of a political project as an attempt to distance himself from it.

— Literary Hub, Literary Hub, 26 Oct. 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

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

As that enormous dome thinned through the Holocene, its margin withdrew up onto Baffin Island, and what’s left today is the deflated core of something that was once two miles thick.

— Jacek Krywko, ArsTechnica, 24 Oct. 2026
This arrangement could provide a larger antenna aperture without requiring a prominent external radar dome, the South China Morning Post reported.

— Bojan Stojkovski, Interesting Engineering, 24 Oct. 2026

Definition of dome

Noun

Broad windows, strategic skylights, and deep overhangs optimize vistas and weather exposure, keeping interiors light and warm.

— Elizabeth Fazzare, Architectural Digest, 22 Oct. 2026
The overhang of when that’s going to occur — whether that’s a year, two years, three years — is always going to be there.

— Nilay Patel, The Verge, 17 Oct. 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

Shifts among Latino voters, who represent sizable portions of the electorate in both states, and Trump’s sagging approval rating appear to be driving Democrats’ strength in redder areas.

— Nicholas Wu, semafor.com, 23 Oct. 2026
Under these pressures, a portion of cost increases has already transmitted to consumers through fare adjustments.

— , CNBC, 23 Oct. 2026

Definition of portion

Browse Nearby Words

protruding

protrusion

protrusions

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“Protrusion.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/protrusion. Accessed 28 Oct. 2026.

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Synonyms of protrusion

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