prō.ˈt(y)üb(ə)rən(t)s noun
( -s )
Etymology: Late Latin protuber are to bulge out + English -ance
1. : the quality or state of being protuberant
lessen the protuberance of an underjaw by an operation
2. : something that is protuberant : protrusion , bulge
a protuberance on the forehead
a cancerous protuberance