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
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.
Recent Examples on the Web Each super connection contains a jumble of some 50 or so protrusions where normally there is only one. Adam Piore — Boston Globe, STAT, 10 May 2024 Grated the bulges in 2008 and 2020 were due to emergencies (Financial Crisis and Pandemic) as were the WWI and WWII protrusions. Robert Barone, Forbes, 24 Feb. 2024 See all Example Sentences for protrusion 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'protrusion.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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

Dictionary Entries Near protrusion

Cite this Entry

“Protrusion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/protrusion. Accessed 30 May. 2024.

Kids Definition

protrusion

noun
pro·​tru·​sion prō-ˈtrü-zhən How to pronounce protrusion (audio)
1
: the act of protruding : the state of being protruded
2
: something that protrudes

Medical Definition

protrusion

noun
pro·​tru·​sion prō-ˈtrü-zhən How to pronounce protrusion (audio)
1
: the quality or state of protruding
the protrusion of a jaw
2
: something (as an anatomical part) that protrudes

More from Merriam-Webster on protrusion

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