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Keratin in Irish (Ceiritin): Meaning, Pronunciation, Usage

The Irish for keratin is ceiritin, a feminine noun (plural ceiritiní).
Updated October 2026Report a mistake

How to say “keratin” in Irish

Irish:
ceiritin
English:
keratin
Word type:
noun
Gender:
feminine
Pronunciation:
“KER-ih-tin”  /ˈcɛɾʲɪtʲɪnʲ/
Various forms
Plural:
ceiritiní (keratins)
Genitive singular:
ceiritine, na ceiritine (e.g. struchtúr na ceiritine, the structure of keratin)
Genitive plural:
ceiritiní, na gceiritiní (e.g. struchtúr na gceiritiní, the structure of keratins)

What does “ceiritin” mean?

keratin
A tough fibrous protein that forms hair, nails, horns, feathers and the outer layer of skin.Also: hair protein, fibrous protein.

“Ceiritin” with the article

The plural of keratin in Irish is ceiritiní. Here is ceiritin after the article (an t-alt), in the singular and the plural.

an cheiritin
the keratin
Lenition: c becomes ch after an (feminine noun)
na ceiritiní
the keratins
Plural: no change after na

“Ceiritin” in a sentence: Irish examples

Common Irish sentences using ceiritin, the Irish word for keratin.

Is próitéin láidir í ceiritin.
Keratin is a strong protein.
Tá an ionga déanta as ceiritin.
The nail is made of keratin.
Tá a lán ceiritine i gcleití éan.
There is a lot of keratin in birds' feathers.
Cuireann an seampú seo ceiritin le do chuid gruaige.
This shampoo adds keratin to your hair.
Tá ceiritiní éagsúla le fáil in ainmhithe.
Different keratins are found in animals.
Tá an cheiritin sa chraiceann uiscedhíonach.
The keratin in the skin is waterproof.
Rinneamar staidéar ar an gceiritin sa rang bitheolaíochta.
We studied keratin in biology class.

Other nouns in Irish

More everyday Irish nouns to learn next.

Keratin in Irish: frequently asked questions

What is the Irish for keratin?

The Irish for keratin is ceiritin (pronounced “KER-ih-tin”). It’s a feminine noun and the plural is ceiritiní.

How do you pronounce ceiritin in Irish?

Ceiritin is said like “KER-ih-tin” (IPA /ˈcɛɾʲɪtʲɪnʲ/).

What is the plural of keratin in Irish?

The plural of ceiritin is ceiritiní; with the article, na ceiritiní means “the keratins”. The genitive plural is ceiritiní, as in struchtúr na gceiritiní (the structure of keratins).

Why does ceiritin change to cheiritin or gceiritin?

Irish changes the start of some words after certain words. After mo (my) ceiritin becomes mo cheiritin (lenition), and after ár (our) or i (in) it becomes ár gceiritin (eclipsis).

Is 'ceiritin' used in everyday speech?

Mostly in science or on cosmetics labels; everyday speech talks about the hair or nails themselves, gruaig or ingne.

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