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Millionth in Irish (Milliúnú): Meaning, Pronunciation, Usage

The Irish for millionth is milliúnú, a masculine noun (plural milliúnuithe).
Updated October 2026Report a mistake

How to say “millionth” in Irish

Irish:
milliúnú
English:
millionth
Word type:
noun
Gender:
masculine
Pronunciation:
“MIL-yoo-noo”  /ˈmʲɪlʲuːnuː/
Various forms
Plural:
milliúnuithe (millionths)
Genitive singular:
milliúnú, an mhilliúnú (e.g. luach an mhilliúnú, the value of the millionth)
Genitive plural:
milliúnuithe, na milliúnuithe (e.g. suim na milliúnuithe, the sum of the millionths)

What does “milliúnú” mean?

millionth
One of a million equal parts of something; a millionth part.Also: millionth part, one millionth.

“Milliúnú” with the article

The plural of millionth in Irish is milliúnuithe. Here is milliúnú after the article (an t-alt), in the singular and the plural.

an milliúnú
the millionth
No change after an
na milliúnuithe
the millionths
Plural: no change after na

“Milliúnú” in a sentence: Irish examples

Common Irish sentences using milliúnú, the Irish word for millionth.

Is milliúnú de mhéadar é micriméadar.
A micrometre is a millionth of a metre.
Tá an milliúnú cuid sin an-bheag ar fad.
That millionth part is extremely small.
Tomhaiseann an gléas seo i milliúnuithe soicind.
This device measures in millionths of a second.
Ní raibh ach milliúnú den seans aige.
He had only a one in a million chance.
Roinn an uimhir ina milliúnuithe.
Divide the number into millionths.
Is ionann milliúnú agus a haon roinnte ar mhilliún.
A millionth equals one divided by a million.
Scríobh an milliúnú mar dheachúil sa chóipleabhar.
Write the millionth as a decimal in the copybook.

Other nouns in Irish

More everyday Irish nouns to learn next.

Millionth in Irish: frequently asked questions

What is the Irish for millionth?

The Irish for millionth is milliúnú (pronounced “MIL-yoo-noo”). It’s a masculine noun and the plural is milliúnuithe.

How do you pronounce milliúnú in Irish?

Milliúnú is said like “MIL-yoo-noo” (IPA /ˈmʲɪlʲuːnuː/).

What is the plural of millionth in Irish?

The plural of milliúnú is milliúnuithe; with the article, na milliúnuithe means “the millionths”. The genitive plural is milliúnuithe, as in suim na milliúnuithe (the sum of the millionths).

Why does milliúnú change to mhilliúnú?

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

Is milliúnú a fraction or an ordinal?

It is used both as the ordinal 'millionth' (an milliúnú duine, the millionth person) and as a noun for the fraction, a millionth part.

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