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Photolysis in Irish (Fótalú): Meaning, Pronunciation, Usage

The Irish for photolysis is fótalú, a masculine noun.
Updated October 2026Report a mistake

How to say “photolysis” in Irish

Irish:
fótalú
English:
photolysis
Word type:
noun
Gender:
masculine
Pronunciation:
“FOH-tuh-loo”  /ˈfoːt̪ˠəl̪ˠuː/
Various forms
Genitive singular:
fótalaithe, an fhótalaithe (e.g. próiseas an fhótalaithe, the process of photolysis)

What does “fótalú” mean?

photolysis
The breaking down of a chemical compound by the action of light.Also: photodecomposition, photodissociation.

“Fótalú” with the article

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

an fótalú
the photolysis
No change after an

“Fótalú” in a sentence: Irish examples

Common Irish sentences using fótalú, the Irish word for photolysis.

Is cineál imoibrithe ceimicigh é fótalú.
Photolysis is a kind of chemical reaction.
Tarlaíonn an fótalú nuair a bhuaileann solas móilín.
Photolysis happens when light strikes a molecule.
Scoilteann fótalú uisce i rith na fótaisintéise.
Photolysis splits water during photosynthesis.
D'fhoghlaimíomar faoi fhótalú sa rang bitheolaíochta.
We learned about photolysis in biology class.
Tá ráta an fhótalaithe ag brath ar an solas.
The rate of photolysis depends on the light.
Scaoiltear ocsaigin le linn an fhótalaithe.
Oxygen is released during photolysis.
Mhínigh an múinteoir an fótalú go soiléir.
The teacher explained photolysis clearly.

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Photolysis in Irish: frequently asked questions

What is the Irish for photolysis?

The Irish for photolysis is fótalú (pronounced “FOH-tuh-loo”). It’s a masculine noun.

How do you pronounce fótalú in Irish?

Fótalú is said like “FOH-tuh-loo” (IPA /ˈfoːt̪ˠəl̪ˠuː/).

Does fótalú have a plural?

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

Why does fótalú change to fhótalú or bhfótalú?

Irish changes the start of some words after certain words. After mo (my) fótalú becomes m'fhótalú (lenition), and after ár (our) or i (in) it becomes ár bhfótalú (eclipsis).

How is fótalú related to fótaisintéis?

Fótalú, the splitting of water by light, is one stage of fótaisintéis (photosynthesis) in plants.

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