Examples from the Web for protrusion
He pulls aside another prisoner with a protrusion on his head, and implies the man was injured by the guards.Somalia’s Prisons: The War on Terror’s Latest Front|Eli Lake|June 27, 2012|DAILY BEAST
This first protrusion of that fact caused a painful confusion in his mind.Kipps|H. G. Wells
The eyelids are wider apart than normal, and there may be some protrusion of the eyeball.Poisons: Their Effects and Detection|Alexander Wynter Blyth
A grinning expression and the protrusion of the lips appear sometimes to go together.The Expression of Emotion in Man and Animals|Charles Darwin
British Dictionary definitions for protrusion
Word Origin and History for protrusion
1640s, from French protrusion, noun of action from past participle stem of Latin protrudere "to push out" (see protrude), or from a similar formation in English.