mastoid

Borrowed from New Latin mastoīdēs, from Ancient Greek μᾰστοειδής (mastoeidḗs, “like a breast”), from μᾰστός (mastós, “a woman's breast”) +‎ -ειδής (-eidḗs, “-like, -oid”).

• IPA^(key): /ˈmæ.stɔɪd/

• Audio (US)

  (file)

• Rhymes: -æstɔɪd

mastoid (not comparable)

1. (anatomy) Being the process of the temporal bone behind the ear.
   1. (zootomy) Being any of several bony elements that occupy a similar position in the skull of lower vertebrates.
2. (anatomy) Of or relating to the mastoid process of the temporal bone.

mastoid (plural mastoids)

1. (anatomy) Ellipsis of mastoid process..
2. (pathology, informal) Clipping of mastoiditis.

• mastoidal
• mastoidectomy
• mastoiditis

• “mastoid”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
• “mastoid”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.

• diatoms