HeyRua Get the app

Hemisphere in Irish (Leathsféar): Meaning, Pronunciation, Usage

‘leathsféar’ also means: hemisphere of the brain

The Irish for hemisphere is leathsféar, a masculine noun (plural leathsféir).
Updated October 2026Report a mistake

How to say “hemisphere” in Irish

Irish:
leathsféar
English:
hemisphere, hemisphere of the brain
Word type:
noun
Gender:
masculine
Pronunciation:
“LAH-sfayr”  /ˈlʲahsˌfʲeːɾˠ/
Various forms
Plural:
leathsféir (hemispheres)
Genitive singular:
leathsféir, an leathsféir (e.g. tíortha an leathsféir thuaidh, the countries of the northern hemisphere)
Genitive plural:
leathsféar, na leathsféar (e.g. léarscáil na leathsféar, the map of the hemispheres)

What does “leathsféar” mean?

“Leathsféar” has two alternative meanings. The most common comes first.

hemisphere
Half of a sphere, especially one of the halves of the earth divided by the equator or a meridian.Also: half sphere, half of the globe.
1 other meaning: hemisphere of the brain
2hemisphere of the brain
Either of the two halves of the brain.Also: cerebral hemisphere, brain hemisphere.

“Leathsféar” with the article

The plural of hemisphere in Irish is leathsféir. Here is leathsféar after the article (an t-alt), in the singular and the plural.

an leathsféar
the hemisphere
No change after an
na leathsféir
the hemispheres
Plural: no change after na

“Leathsféar” in a sentence: Irish examples

Common Irish sentences using leathsféar, the Irish word for hemisphere.

Tá Éire sa leathsféar thuaidh.
Ireland is in the northern hemisphere.
Is samhradh é sa leathsféar theas anois.
It is summer in the southern hemisphere now.
Roinneann an meánchiorcal an domhan ina dhá leathsféar.
The equator divides the world into two hemispheres.
Tá dhá leathsféar san inchinn.
The brain has two hemispheres.
Is é an leathsféar clé a rialaíonn an chaint.
The left hemisphere controls speech.
Ní fheictear na réaltaí sin ón leathsféar seo.
Those stars can't be seen from this hemisphere.
Tá aeráid an leathsféir theas difriúil ar fad.
The climate of the southern hemisphere is completely different.

Other nouns in Irish

More everyday Irish nouns to learn next.

Hemisphere in Irish: frequently asked questions

What is the Irish for hemisphere?

The Irish for hemisphere is leathsféar (pronounced “LAH-sfayr”). It’s a masculine noun and the plural is leathsféir. Depending on context it can also mean hemisphere of the brain.

How do you pronounce leathsféar in Irish?

Leathsféar is said like “LAH-sfayr” (IPA /ˈlʲahsˌfʲeːɾˠ/).

What is the plural of hemisphere in Irish?

The plural of leathsféar is leathsféir; with the article, na leathsféir means “the hemispheres”. The genitive plural is leathsféar, as in léarscáil na leathsféar (the map of the hemispheres).

Does leathsféar have more than one meaning?

Yes. Leathsféar can mean hemisphere or hemisphere of the brain, depending on context; the first is the most common.

How do I say 'northern hemisphere' in Irish?

Say 'an leathsféar thuaidh', and 'an leathsféar theas' for the southern hemisphere.

Learn Irish by
actually speaking it

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

7-day free trial. Cancel anytime.

The HeyRua app home screen