As an adjective mastoid is
of or relating to the mastoid process or mastoid can be shaped like a breast or nipple.
As a noun mastoid is
(anatomy) the mastoid process.
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Wikidiffcom has no English definition. It may be misspelled. mastoid
English
Etymology 1
From (etyl)
Adjective
(head)
Of or relating to the mastoid process.
Noun
(
en noun)
(anatomy) The mastoid process.
Derived terms
* mastoidal
* mastoidectomy
* mastoiditis
* occipitomastoid
* parietomastoid
Etymology 2
From (etyl)
Adjective
(head)
Shaped like a breast or nipple.
Anagrams
*