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a. The act of protruding.
b. The state of being protruded.
2. Something that protrudes.

[Latin prōtrūsus, past participle of prōtrūdere, to protrude; see protrude + -ion.]


1. something that protrudes
2. the state or condition of being protruded
3. the act or process of protruding


(proʊˈtru ʒən, prə-)

1. the act of protruding or the state of being protruded.
2. something that protrudes; projection.
[1640–50; < Latin prōtrūs(us) (past participle of prōtrūdere to protrude) + -ion]




  1. Bulges out like bubble gum before popping —Tom Robbins
  2. Protruding like a warning finger —Beryl Markham
  3. [A church spire] standing out conspicuously like an indicating finger —MacDonald Harris
  4. Standing out unnaturally, like a male harpist in an all-girl orchestra —William Safire
  5. Stand out like a blind man at a tit show —William Diehl
  6. Stand out like a polar bear in the desert —Andrew Kaplan
  7. Stand out like a raisin on a coconut cake —Pat Conroy
  8. Stands out like a blackberry in a pan of milk —American colloquialism, attributed to Vermont
  9. Stick out like a bug on a butter knife —Loren D. Estleman
  10. Sticks out like the belly of a pregnant woman —Robert Lowell
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.protrusion - something that bulges out or is protuberant or projects from its surroundingsprotrusion - something that bulges out or is protuberant or projects from its surroundings; "the gun in his pocket made an obvious bulge"; "the hump of a camel"; "he stood on the rocky prominence"; "the occipital protuberance was well developed"; "the bony excrescence between its horns"
frontal eminence - either prominence of the frontal bone above each orbit
occipital protuberance - prominence on the outer surface of the occipital bone
belly - a part that bulges deeply; "the belly of a sail"
caput - a headlike protuberance on an organ or structure; "the caput humeri is the head of the humerus which fits into a cavity in the scapula"
mogul - a bump on a ski slope
nub, nubble - a small lump or protuberance
snag - a sharp protuberance
wart - any small rounded protuberance (as on certain plants or animals)
projection - any solid convex shape that juts out from something
2.protrusion - the act of projecting out from something
change of shape - an action that changes the shape of something


noun protuberance, swelling, lump, bump, projection, bulge, hump, jut, outgrowth an ugly protrusion on the ankle where the bone had not set properly


A part that protrudes or extends outward:


[prəˈtruːʒən] Nsaliente m, protuberancia f


(= protruding object)Vorsprung m
(= protruding) (of rock, buttress, teeth etc)Vorstehen nt; (of forehead, chin)Vorspringen nt; (of eyes)Vortreten nt
References in periodicals archive ?
If so, then why don't all factory mag followers have that extra little forward protrusion like the Pachmayrs, assuming the mag follower really is the problem?

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