• (a.) Of or pertaining to the styloid and mastoid processes of the temporal bone.
(sti″lo-mas´toid) pertaining to the styloid and mastoid processes of the temporal bone.
Sty`lo·mas'toid adjective (Anat.) Of or pertaining to the styloid and mastoid processes of the temporal bone. 
Type: Term Pronunciation: stī′lō-mas′toyd Definitions: 1. Relating to the styloid and the mastoid processes of the temporal bone; denoting especially a small artery and a foramen.