Anatomy of or relating to the mastoid process
【剖】（与）乳突（有关）的：
1Anatomy the mastoid process
【剖】乳突。
1.1mastoids
treated as sing. informal mastoiditis〈非正式〉乳突炎。
词源
mid 18th cent.: via French and modern Latin from Greek mastoeidēs 'breast-shaped', from mastos 'breast'.