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Planet in Irish (Pláinéad): Meaning, Pronunciation, Usage

The Irish for planet is pláinéad, a masculine noun (plural pláinéid).
Updated October 2026Report a mistake

How to say “planet” in Irish

Irish:
pláinéad
English:
planet
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“plaw-NAYD”  /pˠl̪ˠɑːˈnʲeːd̪ˠ/
Various forms
Plural:
pláinéid (planets)
Genitive singular:
pláinéid, an phláinéid (e.g. dromchla an phláinéid, the surface of the planet)
Genitive plural:
pláinéad, na bpláinéad (e.g. ainmneacha na bpláinéad, the names of the planets)

What does “pláinéad” mean?

planet
A large round body in space that travels around a star, such as the Earth or Mars.Also: world, heavenly body.

“Pláinéad” with the article

The plural of planet in Irish is pláinéid. Here is pláinéad after the article (an t-alt), in the singular and the plural.

an pláinéad
the planet
No change after an
na pláinéid
the planets
Plural: no change after na

“Pláinéad” in a sentence: Irish examples

Common Irish sentences using pláinéad, the Irish word for planet.

Is pláinéad é Mars.
Mars is a planet.
Tá ocht bpláinéad sa ghrianchóras.
There are eight planets in the solar system.
Caithfimid aire a thabhairt don phláinéad.
We have to look after the planet.
Is é Iúpatar an pláinéad is mó.
Jupiter is the biggest planet.
Tá teocht an phláinéid ag ardú.
The planet's temperature is rising.
An bhfuil beatha ar phláinéid eile?
Is there life on other planets?
Chonaic mé pláinéad geal sa spéir aréir.
I saw a bright planet in the sky last night.

Other nouns in Irish

More everyday Irish nouns to learn next.

Planet in Irish: frequently asked questions

What is the Irish for planet?

The Irish for planet is pláinéad (pronounced “plaw-NAYD”). It’s a masculine noun and the plural is pláinéid.

How do you pronounce pláinéad in Irish?

Pláinéad is said like “plaw-NAYD” (IPA /pˠl̪ˠɑːˈnʲeːd̪ˠ/).

What is the plural of planet in Irish?

The plural of pláinéad is pláinéid; with the article, na pláinéid means “the planets”. The genitive plural is pláinéad, as in ainmneacha na bpláinéad (the names of the planets).

Why does pláinéad change to phláinéad or bpláinéad?

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

Is 'pláinéad' the same as 'domhan'?

No: 'pláinéad' is any planet, while 'domhan' means the world or the Earth we live on. You can say 'an Domhan' for the planet Earth.

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