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 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

Hosting everything from vibrational yoga sessions and fractal projections to energy alignments and live performances, the resort’s immersive showpiece is engineered to help guests feel sound, not just hear it.

— Jessica Sulima, Condé Nast Traveler, 10 Oct. 2026
While the imagery around the show was overtly erotic, from the footage of mating snails and kissing bodies to the music and the projections, the clothes themselves were less about baring skin than creating a sense of sensuality.

— Amy Francombe, Vogue, 9 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

The bottoms are basically Molly’s baseball cap, which looks like a dome with a bill just plonked onto it, and Shannon’s wings, which the judges say are just a gingerbread cookie with some icing on it.

— Brian Moylan, Vulture, 9 Oct. 2026
Several churches sustained damage to their domes, while a hotel in Coclé and fire stations in Los Santos were also affected.

— Antonio María Delgado, Miami Herald, 9 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

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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 14 Oct. 2026.

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