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Perfect cube in Irish (Slánchiúb): Meaning, Pronunciation, Usage

The Irish for perfect cube is slánchiúb, a masculine noun (plural slánchiúbanna).
Updated October 2026Report a mistake

How to say “perfect cube” in Irish

Irish:
slánchiúb
English:
perfect cube
Word type:
noun
Gender:
masculine
Pronunciation:
“SLAWN-khyoob”  /ˈsˠl̪ˠaːnˌçuːbʲ/
Various forms
Plural:
slánchiúbanna (perfect cubes)
Genitive singular:
slánchiúib, an tslánchiúib (e.g. fréamh an tslánchiúib, root of the perfect cube)
Genitive plural:
slánchiúbanna, na slánchiúbanna (e.g. suimeanna na slánchiúbanna, the sums of the perfect cubes)

What does “slánchiúb” mean?

perfect cube
A number that is the cube of a whole number, such as 8 or 27.Also: cube number, cubic number.

“Slánchiúb” with the article

The plural of perfect cube in Irish is slánchiúbanna. Here is slánchiúb after the article (an t-alt), in the singular and the plural.

an slánchiúb
the perfect cube
No change after an
na slánchiúbanna
the perfect cubes
Plural: no change after na

“Slánchiúb” in a sentence: Irish examples

Common Irish sentences using slánchiúb, the Irish word for perfect cube.

Is slánchiúb é ocht.
Eight is a perfect cube.
Is é fiche a seacht an chéad slánchiúb eile tar éis a hocht.
Twenty-seven is the next perfect cube after eight.
Scríobh síos na slánchiúbanna faoi bhun céad.
Write down the perfect cubes below a hundred.
Aimsigh fréamh chiúbach an tslánchiúib seo.
Find the cube root of this perfect cube.
Ní slánchiúb é deich.
Ten is not a perfect cube.
D'fhoghlaimíomar faoi shlánchiúbanna sa rang inniu.
We learned about perfect cubes in class today.
Tá gach slánchiúb ina chiúb de shlánuimhir.
Every perfect cube is the cube of an integer.

Other nouns in Irish

More everyday Irish nouns to learn next.

Perfect cube in Irish: frequently asked questions

What is the Irish for perfect cube?

The Irish for perfect cube is slánchiúb (pronounced “SLAWN-khyoob”). It’s a masculine noun and the plural is slánchiúbanna.

How do you pronounce slánchiúb in Irish?

Slánchiúb is said like “SLAWN-khyoob” (IPA /ˈsˠl̪ˠaːnˌçuːbʲ/).

What is the plural of perfect cube in Irish?

The plural of slánchiúb is slánchiúbanna; with the article, na slánchiúbanna means “the perfect cubes”. The genitive plural is slánchiúbanna, as in suimeanna na slánchiúbanna (the sums of the perfect cubes).

Why does slánchiúb change to shlánchiúb?

After words like mo (my) and do (your) the first letter is lenited: mo shlánchiúb. After ár (our) it stays ár slánchiúb, because s does not take eclipsis.

How is 'slánchiúb' different from 'ciúb'?

'Ciúb' is any cube (shape or the cube of a number), while 'slánchiúb' is specifically a perfect cube, the cube of a whole number ('slánuimhir').

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