protuberanceсуществительное A thing that protrudes from something else; a bulge or swelling. The protuberance on the tree trunk was caused by a fungal infection.
A rounded part that sticks out from a surface. The protuberance on the rock made it difficult to climb.
The state or condition of being protuberant; the fact of jutting out or bulging. The protuberance of the cliff face was visible from miles away.