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Aeration in Irish (Aerú): Meaning, Pronunciation, Usage

‘aerú’ also means: ventilation

The Irish for aeration is aerú, a masculine noun. Ag aerú is airing, from the verb aeraigh.
Updated October 2026Report a mistake

How to say “aeration” in Irish

Irish:
aerú
English:
aeration, ventilation
Word type:
noun (verbal noun)
Verbal noun of:
aeraigh, to air (ag aerú, airing)
Gender:
masculine
Pronunciation:
“AIR-oo”  /ˈeːɾˠuː/
Various forms
Genitive singular:
aeraithe, an aeraithe (e.g. próiseas an aeraithe, the aeration process)

What does “aerú” mean?

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

aeration
The verbal noun of the verb aeraigh: the act of letting air into something or exposing it to air.Also: aerating, airing.
1 other meaning: ventilation
2ventilation
The process of letting fresh air into a room or building.Also: ventilating, airing.

“Aerú” as a verbal noun

After ag, aerú means airing: it is the verbal noun of the verb aeraigh (to air). A noun that follows it goes into the genitive.

agat
+
aerúverbal noun
=
ag aerúairing

“Aerú” with the article

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

an t-aerú
the aeration
Masculine nouns take t before a vowel after an

“Aerú” in a sentence: Irish examples

Common Irish sentences using aerú, the Irish word for aeration.

Tá aerú maith ag teastáil sa seomra seo.
This room needs good ventilation.
Cuireadh córas aeraithe nua sa scoil.
A new ventilation system was put into the school.
Tá an t-aerú go dona san oifig.
The ventilation in the office is bad.
Is maith don ithir aerú ó am go chéile.
Aerating the soil now and then is good for it.
Bhí sé ag aerú na n-éadaí ar an líne.
He was airing the clothes on the line.
Theip ar an aerú sa tollán.
The ventilation in the tunnel failed.
Osclaíodh na fuinneoga le haghaidh aeraithe.
The windows were opened for ventilation.

Other nouns in Irish

More everyday Irish nouns to learn next.

Aeration in Irish: frequently asked questions

What is the Irish for aeration?

The Irish for aeration is aerú (pronounced “AIR-oo”). It’s a masculine noun. Depending on context it can also mean ventilation.

How do you pronounce aerú in Irish?

Aerú is said like “AIR-oo” (IPA /ˈeːɾˠuː/).

Does aerú have a plural?

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

Does aerú have more than one meaning?

Yes. Aerú can mean aeration or ventilation, depending on context; the first is the most common.

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

Irish nouns beginning with a vowel take a prefix after certain words: an t-aerú (the aeration), a haerú (her aeration), a n-aerú (their aeration).

What is the difference between aerú and aeráil?

Both relate to airing; aerú is the verbal noun of aeraigh (aerate, ventilate), while aeráil is the verbal noun of aeráil and often means airing or taking the air.

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