The noun has one meaning:
Meaning #1:
process of the temporal bone behind the ear at the base of the skull
Synonyms: mastoid, mastoid process
The adjective mastoidal has 2 meanings:
Meaning #1:
of or relating to or in the region of the mastoid process
Pertains to noun: mastoid (meaning #1)
Meaning #2:
relating to or resembling a nipple
Synonym: mastoid




