Some sentence examples which use the word 'protuberance'
Dermatocera, foot with a horn-shaped protuberance at its posterior end.
They are specially distinguished by the great development of the anterior half of the zygomatic arch of the skull, and by the presence in the boars of a horny protuberance of the skin in front of each eye, which overlies a tuberosity on the nasal bone; the molars are also small and simple, and the anterior premolars are generally shed at an early stage of life.
This protuberance is the outer wall of the sound-chamber.