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Multiplication in Irish (Iolrúchán): Meaning, Pronunciation, Usage

The Irish for multiplication is iolrúchán, a masculine noun.
Updated October 2026Report a mistake

How to say “multiplication” in Irish

Irish:
iolrúchán
English:
multiplication
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“UL-roo-khawn”  /ˈʊl̪ˠɾˠuːxaːnˠ/
Various forms
Genitive singular:
iolrúcháin, an iolrúcháin (e.g. ráta an iolrúcháin, rate of multiplication)

What does “iolrúchán” mean?

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

multiplication
The process of increasing in number or multiplying, especially of living things reproducing or of something being copied many times.Also: proliferation, increase, reproduction.
1 other meaning:
2multiplication
In arithmetic, the operation of multiplying one number by another.Also: times table, multiplying.

Other Irish words for multiplication: iomadú (multiplication), iolrú (multiplication)

“Iolrúchán” with the article

Here is iolrúchán after the article (an t-alt).

an t-iolrúchán
the multiplication
Masculine nouns take t before a vowel after an

“Iolrúchán” in a sentence: Irish examples

Common Irish sentences using iolrúchán, the Irish word for multiplication.

Tharla iolrúchán mór ar na baictéir sa tsaotharlann.
The bacteria multiplied greatly in the laboratory.
Is cúis imní an t-iolrúchán seo.
This multiplication is a cause for concern.
Bhí ráta an iolrúcháin an-ard.
The rate of multiplication was very high.
Cuireann an teas le hiolrúchán na gcealla.
Heat increases the multiplication of the cells.
Tá iolrúchán na víreas faoi smacht anois.
The spread of the viruses is under control now.
Rinne an t-eolaí staidéar ar iolrúchán plandaí.
The scientist studied plant propagation.
Ní raibh súil acu le hiolrúchán chomh tapa.
They did not expect such rapid multiplication.

Other nouns in Irish

More everyday Irish nouns to learn next.

Multiplication in Irish: frequently asked questions

What is the Irish for multiplication?

The Irish for multiplication is iolrúchán (pronounced “UL-roo-khawn”). It’s a masculine noun.

How do you pronounce iolrúchán in Irish?

Iolrúchán is said like “UL-roo-khawn” (IPA /ˈʊl̪ˠɾˠuːxaːnˠ/).

Does iolrúchán have a plural?

No plural form is given for iolrúchán in the standard. Many abstract and mass nouns in Irish have no plural.

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

Irish nouns beginning with a vowel take a prefix after certain words: an t-iolrúchán (the multiplication), a hiolrúchán (her multiplication), a n-iolrúchán (their multiplication).

What is the difference between 'iolrúchán' and 'iolrú'?

'Iolrú' is the verbal noun of 'iolraigh' (to multiply), while 'iolrúchán' is the noun for multiplication as a process or operation, as in 'tábla iolrúcháin' (multiplication table).

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