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Inoculation in Irish (Ionaclú): Meaning, Pronunciation, Usage

The Irish for inoculation is ionaclú, a masculine noun (plural ionacluithe). Ag ionaclú is inoculating, from the verb ionaclaigh.
Updated October 2026Report a mistake

How to say “inoculation” in Irish

Irish:
ionaclú
English:
inoculation
Word type:
noun (verbal noun)
Verbal noun of:
ionaclaigh, to inoculate (ag ionaclú, inoculating)
Gender:
masculine
Pronunciation:
“IN-uh-klu”  /ˈɪnˠəkˠlˠuː/
Various forms
Plural:
ionacluithe (inoculations)
Genitive singular:
ionaclaithe, an ionaclaithe (e.g. clár ionaclaithe, inoculation programme)
Genitive plural:
ionacluithe, na n-ionacluithe (e.g. líon na n-ionacluithe, the number of inoculations)

What does “ionaclú” mean?

inoculation
The act of inoculating someone or something, especially giving a vaccine to protect against disease; it is the verbal noun of the verb ionaclaigh.Also: vaccination, inoculating, immunisation.

“Ionaclú” as a verbal noun

After ag, ionaclú means inoculating: it is the verbal noun of the verb ionaclaigh (to inoculate). A noun that follows it goes into the genitive.

agat
+
ionaclúverbal noun
=
ag ionaclúinoculating

“Ionaclú” with the article

The plural of inoculation in Irish is ionacluithe. Here is ionaclú after the article (an t-alt), in the singular and the plural.

an t-ionaclú
the inoculation
Masculine nouns take t before a vowel after an
na hionacluithe
the inoculations
Plural: na adds h before a vowel

“Ionaclú” in a sentence: Irish examples

Common Irish sentences using ionaclú, the Irish word for inoculation.

Fuair an leanbh ionaclú in aghaidh na bruitíní.
The child was inoculated against measles.
Tá an t-ionaclú saor in aisce do pháistí.
The inoculation is free for children.
Thosaigh clár ionaclaithe nua sa tír inné.
A new inoculation programme started in the country yesterday.
Bíonn gá le dhá ionaclú roimh an turas.
Two inoculations are needed before the trip.
Ní raibh pian ar bith le m'ionaclú.
My inoculation wasn't painful at all.
Bhí an dochtúir gnóthach leis na hionacluithe ar maidin.
The doctor was busy with the inoculations this morning.
Tá ráta ionaclaithe ard sa cheantar seo.
The inoculation rate is high in this area.

Other nouns in Irish

More everyday Irish nouns to learn next.

Inoculation in Irish: frequently asked questions

What is the Irish for inoculation?

The Irish for inoculation is ionaclú (pronounced “IN-uh-klu”). It’s a masculine noun and the plural is ionacluithe.

How do you pronounce ionaclú in Irish?

Ionaclú is said like “IN-uh-klu” (IPA /ˈɪnˠəkˠlˠuː/).

What is the plural of inoculation in Irish?

The plural of ionaclú is ionacluithe; with the article, na hionacluithe means “the inoculations”. The genitive plural is ionacluithe, as in líon na n-ionacluithe (the number of inoculations).

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

Irish nouns beginning with a vowel take a prefix after certain words: an t-ionaclú (the inoculation), a hionaclú (her inoculation), a n-ionaclú (their inoculation), na hionacluithe (the inoculations).

Is 'ionaclú' the same as 'vacsaíniú'?

They overlap: 'ionaclú' is inoculation, while 'vacsaíniú' is vaccination specifically, and everyday speech often uses 'vacsaín' for the jab itself.

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