HeyRua Get the app

Joule in Irish (Giúl): Meaning, Pronunciation, Usage

The Irish for joule is giúl, a masculine noun (plural giúil).
Updated October 2026Report a mistake

How to say “joule” in Irish

Irish:
giúl
English:
joule
Word type:
noun
Gender:
masculine
Pronunciation:
“gyool”  /ɟuːlˠ/
Various forms
Plural:
giúil (joules)
Genitive singular:
giúil, an ghiúil (e.g. sainmhíniú an ghiúil, definition of the joule)
Genitive plural:
giúl, na ngiúl (e.g. líon na ngiúl, the number of joules)

What does “giúl” mean?

joule
The SI unit of energy or work, equal to the work done by a force of one newton moving through one metre.Also: unit of energy, j.

“Giúl” with the article

The plural of joule in Irish is giúil. Here is giúl after the article (an t-alt), in the singular and the plural.

an giúl
the joule
No change after an
na giúil
the joules
Plural: no change after na

“Giúl” in a sentence: Irish examples

Common Irish sentences using giúl, the Irish word for joule.

Is aonad fuinnimh é an giúl.
The joule is a unit of energy.
Tomhaistear fuinneamh i ngiúil.
Energy is measured in joules.
Úsáideann an meaisín céad giúl in aghaidh an tsoicind.
The machine uses a hundred joules per second.
Tá giúl amháin cothrom le niútan méadar amháin.
One joule equals one newton metre.
Ainmníodh an giúl as an eolaí James Joule.
The joule was named after the scientist James Joule.
Ríomh líon na ngiúl a theastaíonn.
Calculate the number of joules needed.
Is giúl in aghaidh an tsoicind é vata.
A watt is a joule per second.

Other nouns in Irish

More everyday Irish nouns to learn next.

Joule in Irish: frequently asked questions

What is the Irish for joule?

The Irish for joule is giúl (pronounced “gyool”). It’s a masculine noun and the plural is giúil.

How do you pronounce giúl in Irish?

Giúl is said like “gyool” (IPA /ɟuːlˠ/).

What is the plural of joule in Irish?

The plural of giúl is giúil; with the article, na giúil means “the joules”. The genitive plural is giúl, as in líon na ngiúl (the number of joules).

Why does giúl change to ghiúl or ngiúl?

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

How does 'giúl' relate to 'vata'?

A 'vata' (watt) is one 'giúl' per second, so 'vata' measures power while 'giúl' measures energy.

Learn Irish by
actually speaking it

Learn everyday Irish words like giúl through guided conversation with Rua.

7-day free trial. Cancel anytime.

The HeyRua app home screen