Mastoid

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Mastoid \Mas"toid\, a. [Gr. ?; masto`s the breast + e'i^dos
     form: cf. F. masto["i]de.] (Anat.)
     (a) Resembling the nipple or the breast; -- applied
         specifically to a process of the temporal bone behind the
         ear.
     (b) Pertaining to, or in the region of, the mastoid process;


         mastoidal.
         [1913 Webster]

From WordNet (r) 2.0 [wn]:

  mastoid
       adj : relating to or resembling a nipple [syn: {mastoidal}]
       n : process of the temporal bone behind the ear at the base of
           the skull [syn: {mastoid process}, {mastoid bone}, {mastoidal}]