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Oxide in Irish (Ocsaíd): Meaning, Pronunciation, Usage

The Irish for oxide is ocsaíd, a feminine noun.
Updated October 2026Report a mistake

How to say “oxide” in Irish

Irish:
ocsaíd
English:
oxide
Word type:
noun
Gender:
feminine, second declension
Pronunciation:
“OK-see-dj”  /ˈɔksˠiːdʲ/
Various forms
Genitive singular:
ocsaíde, na hocsaíde (e.g. foirmiú ocsaíde, formation of an oxide)

What does “ocsaíd” mean?

oxide
A chemical compound in which oxygen is combined with another element.Also: metal oxide, chemical oxide.

“Ocsaíd” with the article

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

an ocsaíd
the oxide
No change: feminine nouns starting with a vowel keep their form after an

“Ocsaíd” in a sentence: Irish examples

Common Irish sentences using ocsaíd, the Irish word for oxide.

Is ocsaíd í meirg.
Rust is an oxide.
Foghlaimíonn na daltaí faoin ocsaíd sa rang ceimice.
The pupils learn about oxide in chemistry class.
Cruthaítear ocsaíd nuair a dhóitear miotal in aer.
An oxide forms when a metal burns in air.
Tá sraith ocsaíde ar dhromchla an alúmanaim.
There is a layer of oxide on the surface of the aluminium.
Is ocsaíd charbóin é an gás sin.
That gas is an oxide of carbon.
Scríobh foirmle na hocsaíde ar an gclár.
Write the formula of the oxide on the board.
Tá ocsaíd iarainn dearg ar dath.
Iron oxide is red in colour.

Other nouns in Irish

More everyday Irish nouns to learn next.

Oxide in Irish: frequently asked questions

What is the Irish for oxide?

The Irish for oxide is ocsaíd (pronounced “OK-see-dj”). It’s a feminine noun.

How do you pronounce ocsaíd in Irish?

Ocsaíd is said like “OK-see-dj” (IPA /ˈɔksˠiːdʲ/).

Does ocsaíd have a plural?

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

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

Irish nouns beginning with a vowel take a prefix after certain words: an ocsaíd (the oxide), a hocsaíd (her oxide), a n-ocsaíd (their oxide).

How do I say carbon dioxide in Irish?

Carbon dioxide is 'dé-ocsaíd charbóin', built on 'ocsaíd' with the prefix 'dé-' meaning two.

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