mastoid, mastoid process, mastoidal

process of the temporal bone behind the ear at the base of the skull

• process, outgrowth, appendage — a natural prolongation or projection from a part of an organism either animal or plant

• mastoidale — the craniometric point at the lowest point of the mastoid process

• temporal bone, os temporale — a thick bone forming the side of the human cranium and encasing the inner ear