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protrusion

noun

pro·​tru·​sion prō-ˈtrü-zhən How to pronounce protrusion (audio)
1
: something (such as an anatomical part or excrescence) that protrudes
2
: the act of protruding : the state of being protruded

Synonyms

Choose the Right Synonym for protrusion

projection, protrusion, protuberance, bulge mean an extension beyond the normal line or surface.

projection implies a jutting out especially at a sharp angle.

those projections along the wall are safety hazards

protrusion suggests a thrusting out so that the extension seems a deformity.

the bizarre protrusions of a coral reef

protuberance implies a growing or swelling out in rounded form.

a skin disease marked by warty protuberances

bulge suggests an expansion caused by internal pressure.

bulges in the tile floor

Example Sentences

bony protrusions on the outside of the elbow a roof with many protrusions The pain was caused by a protrusion of a disc in his lower back.
Recent Examples on the Web This tongue-like protrusion of nerves both processes smells in the brain and is closely entangled with older brain regions, specifically the amygdala, which handles emotions, and the hippocampus, which deals with memory. Wired, 2 Aug. 2022 For those who received a nipple graft following their breast reconstruction surgeries, which leaves a small bump to mimic the protrusion of the original nipple, 4D repigmentation is an option. Devon Abelman, Allure, 25 Apr. 2022 In a 13th-century portrait attributed to the Chinese monk Hu Zhifu, for example, a man displays the marks of enlightenment: the small circle on his forehead, hair in tight curls, the protrusion at the apex of the skull. Lee Lawrence, WSJ, 11 May 2022 Not so with the latest Navigator, which has LINCOLN plastered across its stern and the brand's crosshair emblem set as a nearly foot-tall protrusion within its gently redrawn grille. Mike Sutton, Car and Driver, 4 Mar. 2022 In girls transitioning to boys, testosterone generally leads to permanent voice-lowering, facial hair and protrusion of the Adam’s apple, said Dr. Stephanie Roberts, a specialist at Boston Children’s Hospital’s Gender Management Service. NBC News, 22 Apr. 2022 To get plant cuttings, look for the node—a small protrusion that will turn into roots—between each leaf or set of leaves. Deanna Kizis, Sunset Magazine, 19 Apr. 2022 There also appears to be a small protrusion on the front of the roof that could be a Lidar sensor like on the new Lotus Eletre. Caleb Miller, Car and Driver, 11 Apr. 2022 And the protrusion is there to stay for one more year. Chris Smith, BGR, 23 Mar. 2022 See More

Word History

Etymology

Latin protrudere

First Known Use

1646, in the meaning defined at sense 2

Time Traveler
The first known use of protrusion was in 1646

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