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Dimension in Irish (Diminsean): Meaning, Pronunciation, Usage

The Irish for dimension is diminsean, a masculine noun (plural diminsin).
Updated October 2026Report a mistake

How to say “dimension” in Irish

Irish:
diminsean
English:
dimension
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“DIM-in-shun”  /ˈdʲɪmʲɪnʲʃənˠ/
Various forms
Plural:
diminsin (dimensions)
Genitive singular:
diminsin, an diminsin (e.g. luach an diminsin, the value of the dimension)
Genitive plural:
diminsean, na ndiminsean (e.g. líon na ndiminsean, the number of dimensions)

What does “diminsean” mean?

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

dimension
A measurable extent of something, such as length, breadth or height.Also: measurement, size, extent.
1 other meaning:
2dimension
An aspect or side of a situation, problem or idea.Also: aspect, side, facet.

“Diminsean” with the article

The plural of dimension in Irish is diminsin. Here is diminsean after the article (an t-alt), in the singular and the plural.

an diminsean
the dimension
No change after an
na diminsin
the dimensions
Plural: no change after na

“Diminsean” in a sentence: Irish examples

Common Irish sentences using diminsean, the Irish word for dimension.

Tá trí dhiminsean ag an gciúb.
The cube has three dimensions.
Cad iad diminsin an tseomra seo?
What are the dimensions of this room?
Scríobh síos na diminsin go cúramach.
Write down the dimensions carefully.
Tá diminsean polaitiúil ag an scéal freisin.
The story has a political dimension too.
Thomhais mé gach diminsean den bhosca.
I measured every dimension of the box.
Is líne é rud i ndiminsean amháin.
A thing in one dimension is a line.
Chuir an fhadhb diminsean nua leis an obair.
The problem added a new dimension to the work.

Other nouns in Irish

More everyday Irish nouns to learn next.

Dimension in Irish: frequently asked questions

What is the Irish for dimension?

The Irish for dimension is diminsean (pronounced “DIM-in-shun”). It’s a masculine noun and the plural is diminsin.

How do you pronounce diminsean in Irish?

Diminsean is said like “DIM-in-shun” (IPA /ˈdʲɪmʲɪnʲʃənˠ/).

What is the plural of dimension in Irish?

The plural of diminsean is diminsin; with the article, na diminsin means “the dimensions”. The genitive plural is diminsean, as in líon na ndiminsean (the number of dimensions).

Why does diminsean change to dhiminsean or ndiminsean?

Irish changes the start of some words after certain words. After mo (my) diminsean becomes mo dhiminsean (lenition), and after ár (our) or i (in) it becomes ár ndiminsean (eclipsis).

Is there another Irish word for dimension?

Yes, 'toise' is also widely used, especially in maths and technical terms such as 'tríthoiseach' (three-dimensional), while 'diminsean' is common for dimensions in general.

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