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 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 Traditional control surfaces create gaps and protrusions that increase radar cross-section and require constant adjustments in fly-by-wire systems. — Chris Young, Interesting Engineering, 24 June 2026 The use of Kevlar came as part of Hatfield finding inspiration from the X-15 fighter jet, still to this day the fastest aircraft ever made, while the polarizing tongue protrusion was a nod to Jordan famously sticking out his own while playing. — Ian Servantes, Footwear News, 23 June 2026 See All Example Sentences for protrusion

Recent Examples of Synonyms for protrusion

Noun

Morgan Stanley in June raised its forecast for China's humanoid robot shipments to 50,000 units this year, nearly double its previous projection of 28,000.

— Jenny Lee, CNBC, 19 Aug. 2026
Like Texas, Wisconsin has passed bipartisan tax breaks to entice companies to do business there and were losing out on revenue when the profits blew away their projections.

— David Weigel, semafor.com, 19 Aug. 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

An important question before Prime Minister Shah is whether a small landlocked nation with a youth bulge and rising expectations can deliver in the age of tech disruption and changing geopolitics.

— Vasuki Shastry, Forbes.com, 27 July 2026
With the bulge-bracket firms the clear winners, choosing a VC has become simpler.

— Robert Frank, CNBC, 14 July 2026

Definition of bulge

Noun

The announcement is the latest collaboration between Disney and Webtoon, which has already brought over 20 fan-favorite comics to Webtoon’s vertical-scroll format, available in a dedicated Disney section of the English-language Webtoon app.

— Todd Spangler, Variety, 15 Aug. 2026
Fernandes says the north side of the park is much better than the south side because his team is working section by section to bring change, noting that a safe park is critical to the well-being of the people who live in the area.

— Jeff Nguyen, CBS News, 14 Aug. 2026

Definition of section

Noun

But its centerpiece is the 65-year-old Climatron, a 70-foot-tall geodesic dome that houses 1,400 tropical plant species.

— The New York Times News Service Syndicate, San Diego Union-Tribune, 16 Aug. 2026
Twenty-seven Rare Handcrafts will be on show in Milan, from dome and desk clocks to pocket and wristwatches.

— Ming Liu, Robb Report, 15 Aug. 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

Noun

Farrell said a meaningful portion of the advance appeared to have been driven by traders closing bearish positions.

— Lee Ying Shan, CNBC, 18 Aug. 2026
Those provisions give the inspector general new authority to temporarily withhold portions of his reports that reveal security risks, fraud-detection gaps or pending litigation.

— Julie Watts, CBS News, 18 Aug. 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 22 Aug. 2026.

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Synonyms of protrusion

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