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

The Irish for multiplication is iomadú, a masculine noun. Ag iomadú is multiplying, from the verb iomadaigh.
Updated October 2026Report a mistake

How to say “multiplication” in Irish

Irish:
iomadú
English:
multiplication
Word type:
noun (verbal noun)
Verbal noun of:
iomadaigh, to multiply (ag iomadú, multiplying)
Gender:
masculine
Pronunciation:
“UM-uh-doo”  /ˈʊmˠəd̪ˠuː/
Various forms
Genitive singular:
iomadaithe, an iomadaithe (e.g. tábla iomadaithe, multiplication table)

What does “iomadú” mean?

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

multiplication
The act of increasing in number or multiplying; the verbal noun of the verb 'iomadaigh'.Also: increase, proliferation, multiplying, propagation.
1 other meaning:
2multiplication
In mathematics, the operation of multiplying one number by another.Also: multiplying, times.

Other Irish words for multiplication: iolrú (multiplication)

“Iomadú” as a verbal noun

After ag, iomadú means multiplying: it is the verbal noun of the verb iomadaigh (to multiply). A noun that follows it goes into the genitive.

agat
+
iomadúverbal noun
=
ag iomadúmultiplying

“Iomadú” with the article

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

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

“Iomadú” in a sentence: Irish examples

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

Tá iomadú mór ar na coiníní i mbliana.
The rabbits have multiplied greatly this year.
D'fhoghlaim na páistí an t-iomadú inniu.
The children learned multiplication today.
Tá sí go maith ag an iomadú.
She is good at multiplication.
Bhí an tábla iomadaithe ar an mballa.
The multiplication table was on the wall.
Chleacht na páistí iomadú sa scoil inniu.
The children practised multiplication in school today.
Rinne mé botún san iomadú.
I made a mistake in the multiplication.
Tá comhartha an iomadaithe cosúil le crois.
The multiplication sign looks like a cross.

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 iomadú (pronounced “UM-uh-doo”). It’s a masculine noun.

How do you pronounce iomadú in Irish?

Iomadú is said like “UM-uh-doo” (IPA /ˈʊmˠəd̪ˠuː/).

Does iomadú have a plural?

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

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

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

How do you say 'times' in a sum like 3 x 4?

You say 'trí faoi cheathair' or 'trí méadaithe faoi cheathair'; the operation itself is 'iomadú'.

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