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 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 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 See All Example Sentences for protrusion

Recent Examples of Synonyms for protrusion

Noun

Based on the consensus projection for revenue of $396 billion for fiscal 2027, which ends in January, sales next year would hit $673 billion.

— Leonie Kidd, CNBC, 27 Aug. 2026
The 70% preliminary expectation wildly exceeded projections for fiscal 2028 revenue of roughly $570 billion, or 44% growth from fiscal 2027 (the current year).

— Amanda Gerut, Fortune, 27 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

Monitoring stars by the hundreds of millions is necessary for the rare and fleeting events Roman’s bulge survey is most primed to find.

— Adam Kovac, Scientific American, 29 Aug. 2026
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

Definition of bulge

Noun

The judge later ruled in late 2024 that the two sections were unconstitutional.

— Joseph Flaherty, Arkansas Online, 28 Aug. 2026
The goddess Gayatri, a divine manifestation of the Gayatri mantra, is described in the Mahanarayana Upanishad as having five heads, along with three feet, six abdominal sections, and 24 syllables.

— Charles Preston, Encyclopedia Britannica, 28 Aug. 2026

Definition of section

Noun

Chrysanthemum Chrysanthemums are carefully cultivated and tended through summer to produce the tight, abundant domes of little flowers gardeners prize in autumn.

— Alexandra Jones, The Spruce, 30 Aug. 2026
And the 20-mm silk-dome tweeters handle the top end unbelievably well for this price range, delivering clear, detailed, and clean highs.

— Joe Salas August 28, New Atlas, 28 Aug. 2026

Definition of dome

Noun

Bridges and overhangs were clean, confirming excellent exposure calibration and the printer's ability to resolve intricate features without sacrificing dimensional accuracy.

— Michael Lydick, PC Magazine, 21 Aug. 2026
Remove any large groupings of plants like saw palmetto, yaupon, wax myrtle and gallberry, especially if the plants are close to the home, adjacent decks or porches or under eaves or overhangs.

— Sarah Perkel, USA Today, 21 Aug. 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

Because individual-stock premiums are currently richer, managers may also be able to meet their income targets by writing options against a smaller portion of the portfolio.

— Lee Ying Shan, CNBC, 1 Sep. 2026
The struggles contributed to growing frustration among portions of UCLA’s fan and donor base.

— Ira Gorawara, New York Times, 1 Sep. 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 2 Sep. 2026.

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