What is another word for mastoidal?
Pronunciation: [mˈastɔ͡ɪdə͡l] (IPA) 
Mastoidal is an adjective that describes something related to or located near the mastoid bone, which is a prominent bone behind the ear. Synonyms for mastoidal include retroauricular, postauricular, and petrous. Retroauricular refers to the area behind the ear and can be used to describe a position or location. Postauricular describes something located behind the ear, which is similar to mastoidal. Petrous is an adjective used to describe the densest and hardest portion of the temporal bone, which is located near the mastoid bone. All of these words can be used interchangeably with mastoidal when describing something related to the ear or skull.
