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Unit in Irish (Aonad): Meaning, Pronunciation, Usage

‘aonad’ also means: unit of measurement · unit (number one)

The Irish for unit is aonad, a masculine noun (plural aonaid).
Updated October 2026Report a mistake

How to say “unit” in Irish

Irish:
aonad
English:
unit, unit of measurement, unit (number one)
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“AY-nud”  /ˈeːnˠəd̪ˠ/
Various forms
Plural:
aonaid (units)
Genitive singular:
aonaid, an aonaid (e.g. bainisteoir an aonaid, manager of the unit)
Genitive plural:
aonad, na n-aonad (e.g. líon na n-aonad, the number of units)

What does “aonad” mean?

“Aonad” has three alternative meanings. The most common comes first.

unit
A single thing, group or section regarded as one part of a larger whole, such as a department, a hospital ward or a chapter of a course.Also: section, department, module.
2 other meanings: unit of measurement or unit (number one)
2unit of measurement
A fixed amount used as a standard for measuring, such as a metre or a kilogram.Also: unit, measure.
3unit (number one)
In mathematics, the number one, or the digit in the units place.Also: unit, one, units digit.

Other Irish words for unit: modúl (module)

“Aonad” with the article

The plural of unit in Irish is aonaid. Here is aonad after the article (an t-alt), in the singular and the plural.

an t-aonad
the unit
Masculine nouns take t before a vowel after an
na haonaid
the units
Plural: na adds h before a vowel

“Aonad” in a sentence: Irish examples

Common Irish sentences using aonad, the Irish word for unit.

Oibríonn sí in aonad nua san ospidéal.
She works in a new unit in the hospital.
Tá an t-aonad seo deacair go leor.
This unit is quite difficult.
Is aonad faid é an méadar.
The metre is a unit of length.
Tá sé aonad sa chúrsa seo.
There are six units in this course.
Dúnadh an t-aonad tionsclaíoch anuraidh.
The industrial unit was closed last year.
Chríochnaigh mé obair an aonaid inné.
I finished the unit's work yesterday.
Cuireadh m'athair isteach san aonad dianchúraim.
My father was put into the intensive care unit.

Other nouns in Irish

More everyday Irish nouns to learn next.

Unit in Irish: frequently asked questions

What is the Irish for unit?

The Irish for unit is aonad (pronounced “AY-nud”). It’s a masculine noun and the plural is aonaid. Depending on context it can also mean unit of measurement or unit (number one).

How do you pronounce aonad in Irish?

Aonad is said like “AY-nud” (IPA /ˈeːnˠəd̪ˠ/).

What is the plural of unit in Irish?

The plural of aonad is aonaid; with the article, na haonaid means “the units”. The genitive plural is aonad, as in líon na n-aonad (the number of units).

Does aonad have more than one meaning?

Yes. Aonad can mean unit, unit of measurement or unit (number one), depending on context; the first is the most common.

Why does aonad sometimes have a t or h in front of it?

Irish nouns beginning with a vowel take a prefix after certain words: an t-aonad (the unit), a haonad (her unit), a n-aonad (their unit), na haonaid (the units).

Is 'aonad' related to 'aon'?

Yes, 'aonad' is built on 'aon' (one), so it literally means a oneness or single unit.

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