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Mastoid in Irish (Mastóideach): Meaning, Pronunciation, Usage

‘mastóideach’ also means: mastoiditis

The Irish for mastoid is mastóideach, a masculine noun (plural mastóidigh).
Updated October 2026Report a mistake

How to say “mastoid” in Irish

Irish:
mastóideach
English:
mastoid, mastoiditis
Word type:
noun
Gender:
masculine
Pronunciation:
“MAS-toh-jakh”  /ˈmˠasˠt̪ˠoːdʲəx/
Various forms
Plural:
mastóidigh (mastoids)
Genitive singular:
mastóidigh, an mhastóidigh (e.g. ionfhabhtú an mhastóidigh, infection of the mastoid)
Genitive plural:
mastóideach, na mastóideach (e.g. scrúdú na mastóideach, examination of the mastoids)

What does “mastóideach” mean?

“Mastóideach” has two alternative meanings. The most common comes first.

mastoid
The mastoid, the bony part of the skull just behind the ear.Also: mastoid bone, mastoid process.
1 other meaning: mastoiditis
2mastoiditis
An inflammation or infection of the mastoid bone behind the ear.Also: mastoid infection.

“Mastóideach” with the article

The plural of mastoid in Irish is mastóidigh. Here is mastóideach after the article (an t-alt), in the singular and the plural.

an mastóideach
the mastoid
No change after an
na mastóidigh
the mastoids
Plural: no change after na

“Mastóideach” in a sentence: Irish examples

Common Irish sentences using mastóideach, the Irish word for mastoid.

Tá an mastóideach taobh thiar den chluas.
The mastoid is behind the ear.
Bhí mastóideach ar an leanbh anuraidh.
The child had mastoiditis last year.
Rinne an dochtúir scrúdú ar an mastóideach.
The doctor examined the mastoid.
Tá pian i mo mhastóideach ó mhaidin.
I've had pain in my mastoid since morning.
Bhí at ar chnámh an mhastóidigh.
There was swelling on the mastoid bone.
Tá dhá mhastóideach sa chloigeann.
There are two mastoids in the skull.
Tá na mastóidigh taobh thiar de na cluasa.
The mastoids are behind the ears.

Other nouns in Irish

More everyday Irish nouns to learn next.

Mastoid in Irish: frequently asked questions

What is the Irish for mastoid?

The Irish for mastoid is mastóideach (pronounced “MAS-toh-jakh”). It’s a masculine noun and the plural is mastóidigh. Depending on context it can also mean mastoiditis.

How do you pronounce mastóideach in Irish?

Mastóideach is said like “MAS-toh-jakh” (IPA /ˈmˠasˠt̪ˠoːdʲəx/).

What is the plural of mastoid in Irish?

The plural of mastóideach is mastóidigh; with the article, na mastóidigh means “the mastoids”. The genitive plural is mastóideach, as in scrúdú na mastóideach (examination of the mastoids).

Does mastóideach have more than one meaning?

Yes. Mastóideach can mean mastoid or mastoiditis, depending on context; the first is the most common.

Why does mastóideach change to mhastóideach?

After words like mo (my) and do (your) the first letter is lenited: mo mhastóideach. After ár (our) it stays ár mastóideach, because m does not take eclipsis.

Does 'mastóideach' mean the bone or the illness?

It can mean either the mastoid bone or mastoiditis; context makes it clear, and the condition can be stated explicitly as 'athlasadh an mhastóidigh'.

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