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Chemical in Irish (ceimiceach): Meaning, Forms, Examples

The Irish for chemical is ceimiceach: próiseas ceimiceach, a chemical process.
Updated October 2026Report a mistake

How to say “chemical” in Irish

Irish:
ceimiceach
English:
chemical
Word type:
adjective
More chemical:
níos ceimicí
Most chemical:
is ceimicí
Plural:
ceimiceacha
Pronunciation:
“KEM-ick-ach”  /ˈcɛmʲɪcəx/

What does “ceimiceach” mean?

chemical
Relating to chemistry or to chemicals, or made by a chemical process.Also: chemically made, synthetic.

“Ceimiceach” after a noun

An Irish adjective comes after its noun. Here is ceimiceach after próiseas (process, masculine), after fuil (blood, feminine) and after a plural.

after a masculine nounpróiseas ceimiceacha chemical process
after a feminine nounfuil cheimiceachchemical blood
after a plural nounpróisis cheimiceachachemical processes

séimhiú (the h) the ending

feminine
fuilblood
+
ceimiceachchemical
=
fuil cheimiceachchemical blood

After a feminine noun the adjective gets a séimhiú, an h after its first letter: fuil cheimiceach. After a masculine noun it stays as it is: próiseas ceimiceach.

plural
próisisprocesses
+
ceimiceachachemical, plural
=
próisis cheimiceachachemical processes

With a plural noun the adjective takes its plural form, ceimiceacha. It also gets an h after a plural that ends in a slender consonant: próisis cheimiceacha; after other plurals it does not: fola ceimiceacha.

More chemical, most chemical, very chemical

níosmore
+
ceimicíchemical
=
níos ceimicímore chemical
ismost
+
ceimicíchemical
=
is ceimicímost chemical

Tá an bia seo níos ceimicí ná an bia orgánach. This food is more chemical than the organic food.

more chemicalníos ceimicíin the past tense: ní ba cheimicí
most chemicalis ceimicíin the past tense: ba cheimicí
as chemical aschomh ceimiceach leno change after chomh
very chemicalan-cheimiceachan- lenites, except d, t and s
too chemicalrócheimiceachró- lenites

“Ceimiceach” in a sentence: Irish examples

With a masculine noun, a feminine noun, a plural, a comparison and on its own.

Chuir an feirmeoir leasú ceimiceach ar an talamh.
The farmer put chemical fertiliser on the land.
Tharla imoibriú ceimiceach sa tsaotharlann.
A chemical reaction happened in the laboratory.
Tá na hairíonna ceimiceacha sin an-suimiúil.
Those chemical properties are very interesting.
Tá an bia seo níos ceimicí ná an bia orgánach.
This food is more chemical than the organic food.
Tá an boladh sin ceimiceach.
That smell is chemical.

Other adjectives in Irish

More everyday Irish adjectives to learn next.

Chemical in Irish: frequently asked questions

What is the Irish for chemical?

The Irish for chemical is ceimiceach (pronounced “KEM-ick-ach”). It comes after the noun: próiseas ceimiceach, a chemical process; fuil cheimiceach, chemical blood.

How do you say more chemical and most chemical in Irish?

níos ceimicí is more chemical and is ceimicí is most chemical. In the past tense they become ní ba cheimicí and ba cheimicí.

Why does ceimiceach become cheimiceach?

After a feminine singular noun an adjective is lenited: it gets an h after its first letter. So fuil cheimiceach (chemical blood) but próiseas ceimiceach (a chemical process), because próiseas is masculine.

What is the plural of ceimiceach?

With a plural noun ceimiceach becomes ceimiceacha: próisis cheimiceacha, fola ceimiceacha. After a plural that ends in a slender consonant it is lenited as well.

How do you say very chemical in Irish?

an-cheimiceach. Too chemical is rócheimiceach, and as chemical as is chomh ceimiceach le.

What is the Irish for chemistry and a chemical?

Chemistry is 'ceimic' and a chemical substance is 'ceimiceán'; 'ceimiceach' is the adjective, as in 'imoibriú ceimiceach'.

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