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Alkyl in Irish (Ailcil): Meaning, Pronunciation, Usage

The Irish for alkyl is ailcil, a feminine noun (plural ailcilí).
Updated October 2026Report a mistake

How to say “alkyl” in Irish

Irish:
ailcil
English:
alkyl
Word type:
noun
Gender:
feminine
Pronunciation:
“AL-kil”  /ˈalʲəcəlʲ/
Various forms
Plural:
ailcilí (alkyls)
Genitive singular:
ailcile, na hailcile (e.g. foirmle na hailcile, formula of the alkyl)
Genitive plural:
ailcilí, na n-ailcilí (e.g. airíonna na n-ailcilí, the properties of the alkyls)

What does “ailcil” mean?

alkyl
In chemistry, an alkyl is a group of carbon and hydrogen atoms derived from an alkane by removing one hydrogen atom.Also: alkyl group, alkyl radical.

“Ailcil” with the article

The plural of alkyl in Irish is ailcilí. Here is ailcil after the article (an t-alt), in the singular and the plural.

an ailcil
the alkyl
No change: feminine nouns starting with a vowel keep their form after an
na hailcilí
the alkyls
Plural: na adds h before a vowel

“Ailcil” in a sentence: Irish examples

Common Irish sentences using ailcil, the Irish word for alkyl.

Is grúpa ceimiceach í ailcil.
An alkyl is a chemical group.
Tagann an ailcil ó alcán.
The alkyl comes from an alkane.
Scríobh foirmle na hailcile ar an gclár.
Write the formula of the alkyl on the board.
Tá go leor ailcilí éagsúla ann.
There are many different alkyls.
Tá adamh carbóin amháin san ailcil seo.
There is one carbon atom in this alkyl.
D'fhoghlaimíomar faoi ailcilí sa rang ceimice.
We learned about alkyls in chemistry class.
Cuirtear ailcil in áit adaimh hidrigine.
An alkyl replaces a hydrogen atom.

Other nouns in Irish

More everyday Irish nouns to learn next.

Alkyl in Irish: frequently asked questions

What is the Irish for alkyl?

The Irish for alkyl is ailcil (pronounced “AL-kil”). It’s a feminine noun and the plural is ailcilí.

How do you pronounce ailcil in Irish?

Ailcil is said like “AL-kil” (IPA /ˈalʲəcəlʲ/).

What is the plural of alkyl in Irish?

The plural of ailcil is ailcilí; with the article, na hailcilí means “the alkyls”. The genitive plural is ailcilí, as in airíonna na n-ailcilí (the properties of the alkyls).

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

Irish nouns beginning with a vowel take a prefix after certain words: an ailcil (the alkyl), a hailcil (her alkyl), a n-ailcil (their alkyl), na hailcilí (the alkyls).

How is 'ailcil' related to 'alcán'?

An ailcil is formed from an alcán (alkane) by removing one hydrogen atom, just as in English alkyl comes from alkane.

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