(intransitive) To extend from, above or beyond a surface or boundary; to bulge outward; to stick out. / (transitive) To cause to extend from a surface or boundary; to cause to stick out.

simple past tense and past participle of protrude

That which protrudes.

Third-person singular simple present indicative form of protrude

present participle of protrude

plural of protruder

That may be protruded.