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Compound in Irish (Comhdhúil): Meaning, Pronunciation, Usage

The Irish for compound is comhdhúil, a feminine noun.
Updated October 2026Report a mistake

How to say “compound” in Irish

Irish:
comhdhúil
English:
compound
Word type:
noun
Gender:
feminine, second declension
Pronunciation:
“KOH-ghoo-il”  /ˈkoːɣuːlʲ/
Various forms
Genitive singular:
comhdhúile, na comhdhúile (e.g. foirmle na comhdhúile, the formula of the compound)

What does “comhdhúil” mean?

compound
A substance made of two or more chemical elements joined together.Also: chemical compound, substance.

“Comhdhúil” with the article

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

an chomhdhúil
the compound
Lenition: c becomes ch after an (feminine noun)

“Comhdhúil” in a sentence: Irish examples

Common Irish sentences using comhdhúil, the Irish word for compound.

Is comhdhúil é an t-uisce.
Water is a compound.
Tá hidrigin agus ocsaigin sa chomhdhúil seo.
This compound contains hydrogen and oxygen.
Scríobh foirmle na comhdhúile ar an gclár.
Write the formula of the compound on the board.
Ní meascán í ach comhdhúil.
It isn't a mixture but a compound.
Rinne an t-eolaí comhdhúil nua sa tsaotharlann.
The scientist made a new compound in the lab.
Bhí an chomhdhúil an-nimhiúil.
The compound was very poisonous.
Tá sóidiam agus clóirín i gcomhdhúil an tsalainn.
There is sodium and chlorine in the salt compound.

Other nouns in Irish

More everyday Irish nouns to learn next.

Compound in Irish: frequently asked questions

What is the Irish for compound?

The Irish for compound is comhdhúil (pronounced “KOH-ghoo-il”). It’s a feminine noun.

How do you pronounce comhdhúil in Irish?

Comhdhúil is said like “KOH-ghoo-il” (IPA /ˈkoːɣuːlʲ/).

Does comhdhúil have a plural?

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

Why does comhdhúil change to chomhdhúil or gcomhdhúil?

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

What is the difference between 'comhdhúil' and 'meascán'?

A 'comhdhúil' is a compound whose elements are chemically bonded, while a 'meascán' is a mixture whose parts are not bonded. The word is built from 'comh' (together) and 'dúil' (element).

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