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Radiation in Irish (Gathaíocht): Meaning, Pronunciation, Usage

The Irish for radiation is gathaíocht, a feminine noun.
Updated October 2026Report a mistake

How to say “radiation” in Irish

Irish:
gathaíocht
English:
radiation
Word type:
noun
Gender:
feminine
Pronunciation:
“GAH-ee-ukht”  /ˈɡahiːəxt̪/
Various forms
Genitive singular:
gathaíochta, na gathaíochta (e.g. leibhéal na gathaíochta, the level of radiation)

What does “gathaíocht” mean?

radiation
The giving off of energy as rays or waves, such as light, heat or radioactive particles.Also: radiance, emission of rays.

“Gathaíocht” with the article

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

an ghathaíocht
the radiation
Lenition: g becomes gh after an (feminine noun)

“Gathaíocht” in a sentence: Irish examples

Common Irish sentences using gathaíocht, the Irish word for radiation.

Is féidir le gathaíocht dochar a dhéanamh don chorp.
Radiation can harm the body.
Tomhaiseadh an ghathaíocht sa cheantar tar éis na timpiste.
The radiation in the area was measured after the accident.
Bhí leibhéal na gathaíochta ró-ard.
The radiation level was too high.
Tagann gathaíocht ón ngrian gach lá.
Radiation comes from the sun every day.
Caitheann na hoibrithe éadaí cosanta in aghaidh gathaíochta.
The workers wear protective clothing against radiation.
Tá baol mór i ngathaíocht núicléach.
There is great danger in nuclear radiation.
D'fhoghlaimíomar faoin ngathaíocht sa rang fisice.
We learned about radiation in physics class.

Other nouns in Irish

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Radiation in Irish: frequently asked questions

What is the Irish for radiation?

The Irish for radiation is gathaíocht (pronounced “GAH-ee-ukht”). It’s a feminine noun.

How do you pronounce gathaíocht in Irish?

Gathaíocht is said like “GAH-ee-ukht” (IPA /ˈɡahiːəxt̪/).

Does gathaíocht have a plural?

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

Why does gathaíocht change to ghathaíocht or ngathaíocht?

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

How is 'gathaíocht' related to 'ga'?

'Gathaíocht' comes from 'ga', meaning a ray or beam, so it literally means the sending out of rays.

Is 'gathaíocht' the same as 'radaighníomhaíocht'?

No: 'gathaíocht' is radiation in general, while 'radaighníomhaíocht' means radioactivity, the property of a substance that gives off radiation.

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