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Noun: protrusion  prow'troo-zhun [N. Amer], pru'troo-zhun [Brit]
  1. Something that bulges out or is protuberant or projects from its surroundings
    "the gun in his pocket made an obvious protrusion";
    - bulge, bump, hump, swelling, gibbosity, gibbousness, jut, prominence, protuberance, extrusion, excrescence
     
  2. The act of projecting out from something
    - projection, jut, jutting

Derived forms: protrusions

Type of: change of shape, projection