mastoidal

Thesaurus

Noun	1.	mastoidal - process of the temporal bone behind the ear at the base of the skullmastoid, mastoid bone, mastoid processmastoidale - the craniometric point at the lowest point of the mastoid processos temporale, temporal bone - a thick bone forming the side of the human cranium and encasing the inner earappendage, outgrowth, process - a natural prolongation or projection from a part of an organism either animal or plant; "a bony process"
Adj.	1.	mastoidal - relating to or resembling a nipple mastoid