- To protrude is defined as to stick out.
An example of to protrude is what a nose does from a face.
verbpro·trud·ed, pro·trud·ing, pro·trudes
Origin of protrudeLatin prōtrūdere : prō-, forward; see pro–1 + trūdere, to thrust; see treud- in Indo-European roots.
(third-person singular simple present protrudes, present participle protruding, simple past and past participle protruded)
From Latin prōtrūdō, prōtrūdere.