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 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 Surgeons noted that the man appeared in good health before the surgery, reporting no symptoms besides the painless protrusion. — Beth Mole, ArsTechnica, 9 July 2026 See All Example Sentences for protrusion

Recent Examples of Synonyms for protrusion

Noun

With the installation of new, high efficiency HVAC units and an upgrade to the building automation system, there are significant projections of an increase in efficiency and control.

— Condé Nast, Condé Nast Traveler, 6 Oct. 2026
Geoff warns Ilya to moderate his projections, emphasizing the need for safeguards, but the idealistic Russian is swept up in the vast potential of AI — to solve the climate crisis, cure cancer, even save humanity from itself.

— David Rooney, HollywoodReporter, 6 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

That album drew Simmons’ bass and Bindeman’s drums to the fore of the mix, letting Harris’ guitar and vocals foam behind the rhythm section’s discrete peaks.

— Sasha Geffen, Pitchfork, 8 Oct. 2026
Elephants in the Fog competed in the Un Certain Regard section at the Cannes Film Festival this year, winning the Jury Prize.

— Stewart Clarke, Deadline, 8 Oct. 2026

Definition of section

Noun

Under the new Endangered Species Act interpretations, it would not be considered a federal offense to clear private palmetto flatwoods or cypress domes.

— Timothy Randhir, The Conversation, 1 Oct. 2026
Across the outfield concourse of the stadium (formerly known as Coolray Field), more than 300 emerald ceramic domes will be set to temperatures ranging from 200 to 700 degrees.

— Sam Flemming, AJC.com, 30 Sep. 2026

Definition of dome

Noun

Former employees claim that officials at the Kennedy Center for the Performing Arts in Washington, DC, opted not to undertake repairs of leaks in the building’s roof overhangs months ago.

— Brian Boucher, ARTnews.com, 28 Sep. 2026
Stepping out from its legal and spending overhangs, Meta’s new enterprise venture is especially exciting considering that the company doesn’t currently have a true enterprise arm.

— Zev Fima, CNBC, 28 Sep. 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

Each portion of the exhibit has illustrated diagrams detailing that part of the human anatomy.

— Emma Hall October 3, Sacbee.com, 3 Oct. 2026
The recording includes hesitations and human interventions rather than presenting only the successful portions of the operation.

— Kaif Shaikh, Interesting Engineering, 2 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 9 Oct. 2026.

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Synonyms of protrusion

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