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Vacuum in Irish (Folús): Meaning, Pronunciation, Usage

‘folús’ also means: emptiness

The Irish for vacuum is folús, a masculine noun.
Updated October 2026Report a mistake

How to say “vacuum” in Irish

Irish:
folús
English:
vacuum, emptiness
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“FUL-oos”  /ˈfˠɔlˠuːsˠ/
Various forms
Genitive singular:
folúis, an fholúis (e.g. seomra folúis, vacuum chamber)

What does “folús” mean?

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

vacuum
A space with no air or matter in it.Also: void, empty space.
1 other meaning: emptiness
2emptiness
The state of being empty, or an empty feeling or gap.Also: void, gap, blank.

Other Irish words for vacuum: folúsghlantóir (vacuum cleaner), húvaráil (hoover)

“Folús” with the article

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

an folús
the vacuum
No change after an

“Folús” in a sentence: Irish examples

Common Irish sentences using folús, the Irish word for vacuum.

Ní féidir le fuaim taisteal trí fholús.
Sound cannot travel through a vacuum.
Tá an folús sa spás an-fhuar.
The vacuum in space is very cold.
Coinnítear an bia i bhfolús.
The food is kept in a vacuum.
D'fhág a bás folús ina saol.
Her death left a void in her life.
Rinne an t-eolaí turgnamh i seomra folúis.
The scientist did an experiment in a vacuum chamber.
Bhraith sé folús mór ina chroí.
He felt a great emptiness in his heart.
Cruthaítear folús nuair a bhaintear an t-aer.
A vacuum is created when the air is removed.

Other nouns in Irish

More everyday Irish nouns to learn next.

Vacuum in Irish: frequently asked questions

What is the Irish for vacuum?

The Irish for vacuum is folús (pronounced “FUL-oos”). It’s a masculine noun. Depending on context it can also mean emptiness.

How do you pronounce folús in Irish?

Folús is said like “FUL-oos” (IPA /ˈfˠɔlˠuːsˠ/).

Does folús have a plural?

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

Does folús have more than one meaning?

Yes. Folús can mean vacuum or emptiness, depending on context; the first is the most common.

Why does folús change to fholús or bhfolús?

Irish changes the start of some words after certain words. After mo (my) folús becomes m'fholús (lenition), and after ár (our) or i (in) it becomes ár bhfolús (eclipsis).

How do I say 'vacuum cleaner' in Irish?

Use folúsghlantóir, and the verb 'to vacuum' is folúsghlan.

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