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Ratio in Irish (Cóimheas): Meaning, Pronunciation, Usage

‘cóimheas’ also means: comparison · to compare

The Irish for ratio is cóimheas, a masculine noun (plural cóimheasa). Ag cóimheas is comparing, from the verb cóimheas.
Updated October 2026Report a mistake

How to say “ratio” in Irish

Irish:
cóimheas
English:
ratio, comparison
Word type:
noun (verbal noun)
Verbal noun of:
cóimheas, to compare (ag cóimheas, comparing)
Gender:
masculine, third declension
Pronunciation:
“KOH-vas”  /ˈkoːvʲəsˠ/
Various forms
Plural:
cóimheasa (ratios)
Genitive singular:
cóimheasa, an chóimheasa (e.g. luach an chóimheasa, value of the ratio)
Genitive plural:
cóimheas, na gcóimheas (e.g. liosta na gcóimheas, the list of ratios)

What does “cóimheas” mean?

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

ratio
The relationship in size or amount between two things, expressed as one number compared to another.Also: proportion, rate.
1 other meaning: comparison
2comparison
The act of comparing one thing with another.Also: comparing.

Other Irish words for ratio: ráta (rate)

Other entries for “cóimheas”

The same spelling has its own page as:

“Cóimheas” as a verbal noun

After ag, cóimheas means comparing: it is the verbal noun of the verb cóimheas (to compare). A noun that follows it goes into the genitive.

agat
+
cóimheasverbal noun
=
ag cóimheascomparing

“Cóimheas” with the article

The plural of ratio in Irish is cóimheasa. Here is cóimheas after the article (an t-alt), in the singular and the plural.

an cóimheas
the ratio
No change after an
na cóimheasa
the ratios
Plural: no change after na

“Cóimheas” in a sentence: Irish examples

Common Irish sentences using cóimheas, the Irish word for ratio.

Is é an cóimheas ná a trí le a haon.
The ratio is three to one.
Tá cóimheas na ndaltaí le múinteoirí ard sa scoil seo.
The pupil-teacher ratio is high in this school.
Ríomh an cóimheas idir an dá uimhir.
Calculate the ratio between the two numbers.
Tá na cóimheasa seo an-tábhachtach sa chuntasaíocht.
These ratios are very important in accounting.
D'athraigh luach an chóimheasa le himeacht ama.
The value of the ratio changed over time.
Simpligh an cóimheas sin, le do thoil.
Simplify that ratio, please.
Foghlaimímid faoi chóimheasa i rang na matamaitice.
We learn about ratios in maths class.

Other nouns in Irish

More everyday Irish nouns to learn next.

Ratio in Irish: frequently asked questions

What is the Irish for ratio?

The Irish for ratio is cóimheas (pronounced “KOH-vas”). It’s a masculine noun and the plural is cóimheasa. Depending on context it can also mean comparison.

How do you pronounce cóimheas in Irish?

Cóimheas is said like “KOH-vas” (IPA /ˈkoːvʲəsˠ/).

What is the plural of ratio in Irish?

The plural of cóimheas is cóimheasa; with the article, na cóimheasa means “the ratios”. The genitive plural is cóimheas, as in liosta na gcóimheas (the list of ratios).

Does cóimheas have more than one meaning?

Yes. Cóimheas can mean ratio or comparison, depending on context; the first is the most common. Cóimheas also has its own entry as a verb meaning to compare.

Why does cóimheas change to chóimheas or gcóimheas?

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

What is the difference between cóimheas and comhréir?

Cóimheas is a ratio such as 2:1, while comhréir means proportion, as in i gcomhréir le 'in proportion to'.

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