A protuberance is a body part that bulges (protrudes) outward from a surface.
For example, the ankle is a protuberance of the leg. The ears protrude from the head.
Taber's Medical Dictionary Online website.
Last reviewed on: 2/7/2019
Reviewed by: Linda J. Vorvick, MD, Clinical Associate Professor, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.