(ˈ) ̷ ̷|stȯid ə l adjective
also mas·toi·de·al -dēəl ; or mas·toi·de·an -dēən
Etymology: mastoidal from mastoid (II) + -al; mastoideal, mastoidean from New Latin mastoideus, adjective, mastoid (from mastoides + Latin -eus -eous) + English -al or -an
: mastoid