protrusion

noun
pro·​tru·​sion | \ prō-ˈtrü-zhən How to pronounce protrusion (audio) \

Definition of protrusion

1 : something (such as an anatomical part or excrescence) that protrudes
2 : the act of protruding : the state of being protruded

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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

Examples of protrusion in a Sentence

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.
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Recent Examples on the Web

The shape has six sides at the top and five sides at the bottom, and one of the sides had a triangular protrusion. Avery Thompson, Popular Mechanics, "Scientists Discover a New Shape That Might Be Inside You Right Now," 30 July 2018 Cilia, microscopic hairlike protrusions lining your nose, can channel this dirty mucus to the front of the organ (or down your throat). Carolyn L. Todd, SELF, "Quick Question: Why Do We Sneeze?," 8 Mar. 2019 The Satisfye Pro Gaming Grip slides over the Switch and adds protrusions that fit in your palm and make the whole thing sit in your hands more securely. Alexander George, Popular Mechanics, "This Is the Grip I Use For My Nintendo Switch," 31 Dec. 2018 In other words, that little protrusion on the ends of our metatarsals puts a little more spring in our step—and that gave our ancestors an evolutionary advantage. Kiona N. Smith, Ars Technica, "The road to bipedalism wasn’t straight and narrow," 15 Aug. 2018 This kooky home on the island of Corsica in France resembles an old submarine or antique diving helmet, given its porthole windows and protrusions. Lauren Ro, Curbed, "Kooky ’70s home on French island yours for $1.3M," 21 June 2018 Kusama started sewing the soft, phallic protrusions that became one of her hallmarks; Claes Oldenburg, who had been working with mainly hard materials at that time, switched to fabric. Chloe Schama, Vogue, "Kusama: Infinity Makes the Case for the Japanese Artist as a Feminist Force," 7 Sep. 2018 These little protrusions are very flexible and very, very strong. Dan Dubno, Popular Mechanics, "Anyone Can Be Spider-Man With DARPA's Wall-Climbing Invention," 7 Dec. 2016 The closet was a two-sided protrusion with a bar to hang clothes on, covered by a brown curtain. Michael Lindsay-hogg, Town & Country, "Brando in a Blue Blazer," 22 Aug. 2013

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'protrusion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of protrusion

1646, in the meaning defined at sense 2

History and Etymology for protrusion

Latin protrudere

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Statistics for protrusion

Last Updated

17 May 2019

Look-up Popularity

Time Traveler for protrusion

The first known use of protrusion was in 1646

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More Definitions for protrusion

protrusion

noun

English Language Learners Definition of protrusion

: a part that sticks out
: the act of sticking out or the condition of something that sticks out

protrusion

noun
pro·​tru·​sion | \ prō-ˈtrü-zhən How to pronounce protrusion (audio) \

Medical Definition of protrusion

1 : the quality or state of protruding the protrusion of a jaw
2 : something (as an anatomical part) that protrudes

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Comments on protrusion

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