mastoid /ˈmæ.stɔɪd/adjective 4noun 2forms 1 adjective4 •Being the process of the temporal bone behind the ear. •Being any of several bony elements that occupy a similar position in the skull of lower vertebrates. •Of or relating to the mastoid process of the temporal bone. •Shaped like a nipple.Spores tetrahedral, paraphyses mastoid-claviform, scales smooth, entire. — 1899 noun2 •Ellipsis of mastoid process. •(informal) Clipping of mastoiditis. formsmastoids
