protrusion

1. 1.

   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”

   Synonymsbulgebumphumpswellinggibbositygibbousnessjutprominenceprotuberanceextrusionexcrescence

   Broaderprojection

   Narrowerfrontal eminenceoccipital protuberancebellycaputmogulnubsnagwart
2. 2.

   the act of projecting out from something

   Synonymsprojectionjutjutting

   Broaderchange of shape

Other forms of protrusion

plural

protrusions·

Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.

Questions about protrusion

What does protrusion mean?

protrusion means "something that bulges out or is protuberant or projects from its surroundings". That is the primary sense; the word has 2 in total, listed in full on this page.

How many syllables are in protrusion?

protrusion has 4 syllables: pro-tru-si-on. The stress falls on "si".

What is another word for protrusion?

Close synonyms include bulge, bump, hump, swelling, gibbosity. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is protrusion a common word?

protrusion is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.