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

So while Epson has made giant high-fps 4K projection more accessible, the limiting factor may ultimately end up being your living room rather than the hardware.

— New Atlas, New Atlas, 28 Sep. 2026
Democrats are hoping to win back a majority in the House and Senate — though Republicans are still favored in most projections to retain the upper chamber — and have tried to distinguish themselves as the more pro-regulation party.

— Justin Papp, CNBC, 28 Sep. 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

The Parthenon’s columns famously have a slight inward tilt toward the roof and bulge at the center, which some people theorize balances out the curved stylobate.

— Emma Gometz, Scientific American, 22 Sep. 2026
It’s designed with a flexible, supportive jelly strip and wide sides provide a smooth, bulge-free coverage that looks polished under T-shirts.

— Jacqueline Tempera, PEOPLE, 17 Sep. 2026

Definition of bulge

Noun

Walking through it, which the work impels one to do, shows that the six sections of Shift afford a sequence of passages down into and across the terrain.

— Jeffrey Weiss, Artforum, 1 Oct. 2026
Scientists can now examine sections of DNA that were once inaccessible and detect forms of genetic variation that older methods may have missed.

— Euan Ashley, STAT, 1 Oct. 2026

Definition of section

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

If the leak becomes more pronounced, repair costs can vary significantly depending on which portion of the oil pan is involved.

— John Paul Senior Manager Public Affairs And Traffic Safety Aaa Northeast, Hartford Courant, 26 Sep. 2026
When someone makes a charitable payment and receives goods or services in return, the deductible portion is generally limited to the amount exceeding the value of the benefit received.

— Jayson Weingarten, Fortune, 26 Sep. 2026

Definition of portion

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“Protrusion.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/protrusion. Accessed 3 Oct. 2026.

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Synonyms of protrusion

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