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Aldehyde in Irish (Aildéad): Meaning, Pronunciation, Usage

The Irish for aldehyde is aildéad, a masculine noun.
Updated October 2026Report a mistake

How to say “aldehyde” in Irish

Irish:
aildéad
English:
aldehyde
Word type:
noun
Gender:
masculine
Pronunciation:
“AL-dyayd”  /ˈalʲdʲeːdˠ/
Various forms
Genitive singular:
aildéid, an aildéid (e.g. foirmle an aildéid, the formula of the aldehyde)

What does “aildéad” mean?

aldehyde
An organic chemical compound containing a carbonyl group bonded to hydrogen, such as formaldehyde.Also: aldehyde compound, organic compound.

“Aildéad” with the article

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

an t-aildéad
the aldehyde
Masculine nouns take t before a vowel after an

“Aildéad” in a sentence: Irish examples

Common Irish sentences using aildéad, the Irish word for aldehyde.

Is comhdhúil orgánach é aildéad.
An aldehyde is an organic compound.
Rinneamar an t-aildéad a ocsaídiú sa tsaotharlann.
We oxidised the aldehyde in the laboratory.
Tá boladh láidir ar an aildéad seo.
This aldehyde has a strong smell.
Scríobh foirmle an aildéid ar an gclár.
Write the formula of the aldehyde on the board.
Foghlaimíonn na daltaí faoi aildéad sa cheimic.
The students learn about aldehydes in chemistry.
Déantar aigéad as an aildéad nuair a ocsaídítear é.
An acid is made from the aldehyde when it is oxidised.
Tá grúpa carbóinile in aildéad.
An aldehyde contains a carbonyl group.

Other nouns in Irish

More everyday Irish nouns to learn next.

Aldehyde in Irish: frequently asked questions

What is the Irish for aldehyde?

The Irish for aldehyde is aildéad (pronounced “AL-dyayd”). It’s a masculine noun.

How do you pronounce aildéad in Irish?

Aildéad is said like “AL-dyayd” (IPA /ˈalʲdʲeːdˠ/).

Does aildéad have a plural?

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

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

Irish nouns beginning with a vowel take a prefix after certain words: an t-aildéad (the aldehyde), a haildéad (her aldehyde), a n-aildéad (their aldehyde).

How is 'aildéad' related to 'céatón'?

Both are carbonyl compounds: in an aildéad the carbonyl group is at the end of the chain, while in a céatón it is within the chain.

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