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Unit length in Irish (Aonadfhad): Meaning, Pronunciation, Usage

The Irish for unit length is aonadfhad, a masculine noun (plural aonadfhaid).
Updated October 2026Report a mistake

How to say “unit length” in Irish

Irish:
aonadfhad
English:
unit length
Word type:
noun
Gender:
masculine
Pronunciation:
“AY-nud-ad”  /ˈeːn̪ˠəd̪ˠad̪ˠ/
Various forms
Plural:
aonadfhaid (unit lengths)
Genitive singular:
aonadfhaid, an aonadfhaid (e.g. luach an aonadfhaid, the value of the unit length)
Genitive plural:
aonadfhad, na n-aonadfhad (e.g. suim na n-aonadfhad, the sum of the unit lengths)

What does “aonadfhad” mean?

unit length
A length of one unit, used as a standard measure in mathematics and physics.Also: unit of length, length of one unit.

“Aonadfhad” with the article

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

an t-aonadfhad
the unit length
Masculine nouns take t before a vowel after an
na haonadfhaid
the unit lengths
Plural: na adds h before a vowel

“Aonadfhad” in a sentence: Irish examples

Common Irish sentences using aonadfhad, the Irish word for unit length.

Is ionann aonadfhad agus fad amháin.
A unit length equals a length of one.
Tarraing líne atá aonadfhad ar fhad.
Draw a line one unit length long.
Roghnaigh an t-aonadfhad ar dtús.
Choose the unit length first.
Tomhais an líne i dtéarmaí an aonadfhaid.
Measure the line in terms of the unit length.
Tá an taobh trí aonadfhaid ar fhad.
The side is three unit lengths long.
Is é an ceintiméadar m'aonadfhad sa ghraf seo.
The centimetre is my unit length in this graph.
Úsáidtear aonadfhad sa gheoiméadracht go minic.
A unit length is often used in geometry.

Other nouns in Irish

More everyday Irish nouns to learn next.

Unit length in Irish: frequently asked questions

What is the Irish for unit length?

The Irish for unit length is aonadfhad (pronounced “AY-nud-ad”). It’s a masculine noun and the plural is aonadfhaid.

How do you pronounce aonadfhad in Irish?

Aonadfhad is said like “AY-nud-ad” (IPA /ˈeːn̪ˠəd̪ˠad̪ˠ/).

What is the plural of unit length in Irish?

The plural of aonadfhad is aonadfhaid; with the article, na haonadfhaid means “the unit lengths”. The genitive plural is aonadfhad, as in suim na n-aonadfhad (the sum of the unit lengths).

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

Irish nouns beginning with a vowel take a prefix after certain words: an t-aonadfhad (the unit length), a haonadfhad (her unit length), a n-aonadfhad (their unit length), na haonadfhaid (the unit lengths).

How is 'aonadfhad' formed?

It is a compound of 'aonad' (unit) and 'fad' (length), with the f lenited, giving 'aonadfhad'.

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