mastoiditis

n [U] inflammation of the mastoid 乳突炎.

master, master class, Master of Ceremonies, master sergeant, Master's degree (also Master's), master-key, master-stroke, masterful, masterfully, masterly, mastermind, masterpiece, mastery, mastic, masticate, mastication, mastiff, mastitis, mastodon, mastoid, masturbate, masturbation, masturbatory, mat, matador, match, match point, matchbox, matched, matchless, matchmaker, matchmaking, matchstick, matchwood, mate, material, materialism, materialist, materialistic, materialistically,