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 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 Officially, these prominent bumper protrusions were inspired by jet-age design and missile imagery. — Peter Lyon, Forbes.com, 18 June 2026 Prolapse or protrusion of hemorrhoids don’t go back in. — Tom Gavin, EverydayHealth.com, 29 Apr. 2026 The long stretch between Northern and Central Virginia is the lobster’s body, while its protrusions into Central and Western Virginia resemble its claws. — Phillip M. Bailey, USA Today, 21 Apr. 2026 See All Example Sentences for protrusion

Recent Examples of Synonyms for protrusion

Noun

Musk pointed to each of the three business lines as part of the pillars of the company that will fuel what would have to be 10x growth in three or four years to hit his $1 trillion revenue projection.

— Amanda Gerut, Fortune, 5 Aug. 2026
That chart uses FanGraphs’ Rest-of-Season WAR projections, which estimates how many wins a player will contribute compared to a replacement-level player over the remainder of the season.

— Tyler Estep, AJC.com, 5 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

Garwood, a supervisory civil engineer in the stormwater section of Overland Park’s Public Works Department, was conducting the city’s regular inspection of the South Park Lake dam.

— Kansas City Star, Kansas City Star, 31 July 2026
The live chat will take place in the comments section below on site and in the PEOPLE App.

— Lindsay Kimble, PEOPLE, 31 July 2026

Definition of section

Noun

However, persistent inflation, a resilient labor market and Fed Chairman Warsh's hawkish tone still remain as market overhangs, with better than 50% odds of higher rates by year-end.

— Todd Gordon, CNBC, 4 Aug. 2026
Hong Kong is enjoying a listings revival, the CSRC's blessing removes the regulatory overhang that killed London, and the exchange's investor base needs no tutorial on Chinese supply chains.

— Drew Bernstein, Forbes.com, 28 July 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

James' decision to run for governor left open his seat in the 10th District, which includes a portion of Oakland County and stretches across conservative communities in Macomb County.

— ABC News, ABC News, 4 Aug. 2026
Temperatures reached at least 40 degrees Celsius (104 Fahrenheit) for five consecutive days in some areas in late July, the country’s longest such streak on record, and heatstroke alerts have repeatedly covered large portions of the country.

— Yumi Asada, CNN Money, 4 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 8 Aug. 2026.

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Synonyms of protrusion

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