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Nucleus in Irish (Núicléas): Meaning, Pronunciation, Usage

The Irish for nucleus is núicléas, a masculine noun (plural núicléis).
Updated October 2026Report a mistake

How to say “nucleus” in Irish

Irish:
núicléas
English:
nucleus
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“NOO-ik-lay-uss”  /ˈn̪ˠuːcɪl̠ʲeːəsˠ/
Various forms
Plural:
núicléis (nuclei)
Genitive singular:
núicléis, an núicléis (e.g. lár an núicléis, the centre of the nucleus)
Genitive plural:
núicléas, na núicléas (e.g. struchtúr na núicléas, the structure of the nuclei)

What does “núicléas” mean?

nucleus
The central part of an atom or of a living cell, or the core of anything around which other things gather.Also: atomic nucleus, cell nucleus, core.

“Núicléas” with the article

The plural of nucleus in Irish is núicléis. Here is núicléas after the article (an t-alt), in the singular and the plural.

an núicléas
the nucleus
No change after an
na núicléis
the nuclei
Plural: no change after na

“Núicléas” in a sentence: Irish examples

Common Irish sentences using núicléas, the Irish word for nucleus.

Tá prótóin agus neodróin sa núicléas.
The nucleus contains protons and neutrons.
Is beag an núicléas i gcomparáid leis an adamh.
The nucleus is tiny compared with the atom.
Tá DNA na cille i núicléas na cille.
The cell's DNA is in the cell nucleus.
Scoilteadh núicléas a bhíonn i stáisiún núicléach.
Splitting of nuclei happens in a nuclear power station.
Tá lucht dearfach ag an núicléas.
The nucleus has a positive charge.
Chonaiceamar núicléas faoin micreascóp inniu.
We saw a nucleus under the microscope today.
Bíonn méid an núicléis éagsúil ó adamh go hadamh.
The size of the nucleus varies from atom to atom.

Other nouns in Irish

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Nucleus in Irish: frequently asked questions

What is the Irish for nucleus?

The Irish for nucleus is núicléas (pronounced “NOO-ik-lay-uss”). It’s a masculine noun and the plural is núicléis.

How do you pronounce núicléas in Irish?

Núicléas is said like “NOO-ik-lay-uss” (IPA /ˈn̪ˠuːcɪl̠ʲeːəsˠ/).

What is the plural of nucleus in Irish?

The plural of núicléas is núicléis; with the article, na núicléis means “the nuclei”. The genitive plural is núicléas, as in struchtúr na núicléas (the structure of the nuclei).

What is the adjective from 'núicléas'?

The adjective is 'núicléach', as in 'fuinneamh núicléach' (nuclear energy) and 'arm núicléach' (nuclear weapon).

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