'Mastoid' definitions:
Definition of 'mastoid'
From: WordNet
adjective
Of or relating to or in the region of the mastoid process
adjective
Relating to or resembling a nipple [syn: mastoid, mastoidal]
noun
Process of the temporal bone behind the ear at the base of the skull [syn: mastoid, mastoid process, mastoid bone, mastoidal]
Definition of 'Mastoid'
From: 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]