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Equation in Irish (Cothromóid): Meaning, Pronunciation, Usage

The Irish for equation is cothromóid, a feminine noun (plural cothromóidí).
Updated October 2026Report a mistake

How to say “equation” in Irish

Irish:
cothromóid
English:
equation
Word type:
noun
Gender:
feminine, second declension
Pronunciation:
“KUR-huh-mohdj”  /ˈkɔɾˠhəmˠoːdʲ/
Various forms
Plural:
cothromóidí (equations)
Genitive singular:
cothromóide, na cothromóide (e.g. réiteach na cothromóide, the solution of the equation)
Genitive plural:
cothromóidí, na gcothromóidí (e.g. réiteach na gcothromóidí, the solution of the equations)

What does “cothromóid” mean?

equation
A mathematical statement showing that two expressions are equal, often used to find an unknown value.Also: mathematical equation, formula.

“Cothromóid” with the article

The plural of equation in Irish is cothromóidí. Here is cothromóid after the article (an t-alt), in the singular and the plural.

an chothromóid
the equation
Lenition: c becomes ch after an (feminine noun)
na cothromóidí
the equations
Plural: no change after na

“Cothromóid” in a sentence: Irish examples

Common Irish sentences using cothromóid, the Irish word for equation.

Réitigh an chothromóid seo, le do thoil.
Solve this equation, please.
Ní thuigim an dara cothromóid ar chor ar bith.
I don't understand the second equation at all.
Bhí cothromóidí casta ar an scrúdú inniu.
There were complicated equations on the exam today.
Scríobh sí an chothromóid ar an gclár bán.
She wrote the equation on the whiteboard.
Cad é freagra na cothromóide sin?
What is the answer to that equation?
Rinne mé botún i mo chothromóid.
I made a mistake in my equation.
Tá x anaithnid sa chothromóid.
There is an unknown x in the equation.

Other nouns in Irish

More everyday Irish nouns to learn next.

Equation in Irish: frequently asked questions

What is the Irish for equation?

The Irish for equation is cothromóid (pronounced “KUR-huh-mohdj”). It’s a feminine noun and the plural is cothromóidí.

How do you pronounce cothromóid in Irish?

Cothromóid is said like “KUR-huh-mohdj” (IPA /ˈkɔɾˠhəmˠoːdʲ/).

What is the plural of equation in Irish?

The plural of cothromóid is cothromóidí; with the article, na cothromóidí means “the equations”. The genitive plural is cothromóidí, as in réiteach na gcothromóidí (the solution of the equations).

Why does cothromóid change to chothromóid or gcothromóid?

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

How is 'cothromóid' related to 'cothrom'?

It comes from 'cothrom', meaning equal or fair, so 'cothromóid' is literally a statement of equality. Do not confuse it with 'cothromaíocht', which means balance or equilibrium.

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