Mastoid

(mas’-toid) \_jiacroq, breast, nipple; eidog, like]. I. Nipple-shaped, as the M. proce of the temporal bone. 2. The mastoid proce . 3. Pertaining to the mastoid proce , as M. foramen, M. operation. M. Absce , an absce of the mastoid cells. M. Antrum, a cavity in the mastoid portion of the temporal bone. M. Cells, the hollow air-spaces in the mastoid proce communicating with the middle ear. M. Disease, inflammation of the mastoid cells, mastoiditis. M. Foramen. See Foramina, Table °f-... 381