Dictionary

protrusion

noun pro·tru·sion \prō-ˈtrü-zhən\

: a part that sticks out

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

Full Definition of PROTRUSION

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

  1. bony protrusions on the outside of the elbow
  2. a roof with many protrusions
  3. The pain was caused by a protrusion of a disc in his lower back.

Origin of PROTRUSION

Latin protrudere
First Known Use: 1646

Synonym Discussion of 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>.
Medical Dictionary

protrusion

noun pro·tru·sion \prō-ˈtrü-zhən\

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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