Standard Lemma guide

mastoid

adj · noun · 9 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • /ˈmæ.stɔɪd/
  • US: Recorded audio is listed in the source snapshot.
  • rhymes with -æstɔɪd

1

adj

Meaning 1

Being the process of the temporal bone behind the ear.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: anatomy, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Being the process of the temporal bone behind the ear.

Being any of several bony elements that occupy a similar position in the skull of lower vertebrates.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: anatomy, biology, medicine, natural-sciences, sciences, zoology, zootomy

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adj

Meaning 3

Of or relating to the mastoid process of the temporal bone.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: anatomy, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

adj

Meaning 4

Shaped like a nipple.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: biology, botany, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

Ellipsis of mastoid process.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, ellipsis

Topics: anatomy, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

Clipping of mastoiditis.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, clipping, informal

Topics: medicine, pathology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

adjective

Meaning 7

relating to or resembling a nipple

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: mastoidal

Antonyms: none provided

8

adjective

Meaning 8

of or relating to or in the region of the mastoid process

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

9

noun

Meaning 9

process of the temporal bone behind the ear at the base of the skull

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: mastoid process, mastoid bone, mastoidal

Antonyms: none provided

Broader terms: process, outgrowth, appendage

History

Etymology

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