HeyRua Get the app

Variable quantity in Irish (Athraitheach): Meaning, Pronunciation, Usage

‘athraitheach’ also means: variant · changeable

The Irish for variable quantity is athraitheach, a masculine noun (plural athraithigh).
Updated October 2026Report a mistake

How to say “variable quantity” in Irish

Irish:
athraitheach
English:
variable quantity, variant
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“AH-ree-hukh”  /ˈahɾˠɪhəx/
Various forms
Plural:
athraithigh (variable quantities)
Genitive singular:
athraithigh, an athraithigh (e.g. luach an athraithigh, the value of the variable)
Genitive plural:
athraitheach, na n-athraitheach (e.g. liosta na n-athraitheach, the list of the variables)

What does “athraitheach” mean?

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

variable quantity
In mathematics or science, a quantity or factor that can take different values.Also: variable, unknown quantity, factor.
1 other meaning: variant
2variant
A form or version of something that differs slightly from others of the same kind.Also: variant form, version.
Other entries for “athraitheach”

The same spelling has its own page as:

“Athraitheach” with the article

The plural of variable quantity in Irish is athraithigh. Here is athraitheach after the article (an t-alt), in the singular and the plural.

an t-athraitheach
the variable quantity
Masculine nouns take t before a vowel after an
na hathraithigh
the variable quantities
Plural: na adds h before a vowel

“Athraitheach” in a sentence: Irish examples

Common Irish sentences using athraitheach, the Irish word for variable quantity.

Is athraitheach é x sa chothromóid seo.
X is a variable in this equation.
Cad é luach an athraithigh?
What is the value of the variable?
Tá trí athraitheach sa turgnamh.
There are three variables in the experiment.
Athraigh an t-athraitheach agus féach ar an toradh.
Change the variable and look at the result.
Is athraitheach den fhocal sin é an litriú seo.
This spelling is a variant of that word.
Scríobh ainm an athraithigh ar an gclár.
Write the name of the variable on the board.
Bhí na hathraithigh uile ag brath ar a chéile.
All the variables depended on each other.

Other nouns in Irish

More everyday Irish nouns to learn next.

Variable quantity in Irish: frequently asked questions

What is the Irish for variable quantity?

The Irish for variable quantity is athraitheach (pronounced “AH-ree-hukh”). It’s a masculine noun and the plural is athraithigh. Depending on context it can also mean variant.

How do you pronounce athraitheach in Irish?

Athraitheach is said like “AH-ree-hukh” (IPA /ˈahɾˠɪhəx/).

What is the plural of variable quantity in Irish?

The plural of athraitheach is athraithigh; with the article, na hathraithigh means “the variable quantities”. The genitive plural is athraitheach, as in liosta na n-athraitheach (the list of the variables).

Does athraitheach have more than one meaning?

Yes. Athraitheach can mean variable quantity or variant, depending on context; the first is the most common. Athraitheach also has its own entry as an adjective meaning changeable.

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

Irish nouns beginning with a vowel take a prefix after certain words: an t-athraitheach (the variable quantity), a hathraitheach (her variable quantity), a n-athraitheach (their variable quantity), na hathraithigh (the variable quantities).

What is the opposite of 'athraitheach' in maths?

A fixed quantity is 'tairiseach', a constant, while 'athraitheach' is a variable.

Learn Irish by
actually speaking it

Learn everyday Irish words like athraitheach through guided conversation with Rua.

7-day free trial. Cancel anytime.

The HeyRua app home screen