HeyRua Get the app

Isomer in Irish (Isiméir): Meaning, Pronunciation, Usage

The Irish for isomer is isiméir, a feminine noun.
Updated October 2026Report a mistake

How to say “isomer” in Irish

Irish:
isiméir
English:
isomer
Word type:
noun
Gender:
feminine, second declension
Pronunciation:
“ISH-ih-mair”  /ˈɪʃɪmʲeːrʲ/
Various forms
Genitive singular:
isiméire, na hisiméire (e.g. struchtúr na hisiméire, the structure of the isomer)

What does “isiméir” mean?

isomer
In chemistry, one of two or more compounds with the same molecular formula but a different arrangement of atoms.Also: chemical isomer, structural isomer.

“Isiméir” with the article

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

an isiméir
the isomer
No change: feminine nouns starting with a vowel keep their form after an

“Isiméir” in a sentence: Irish examples

Common Irish sentences using isiméir, the Irish word for isomer.

Is isiméir den chomhdhúil sin í an tsubstaint seo.
This substance is an isomer of that compound.
Tá an fhoirmle chéanna ag an isiméir.
The isomer has the same formula.
Rinneamar staidéar ar an isiméir sa tsaotharlann.
We studied the isomer in the laboratory.
Tá socrú na n-adamh difriúil san isiméir.
The arrangement of the atoms is different in the isomer.
Mhínigh an múinteoir airíonna na hisiméire.
The teacher explained the properties of the isomer.
Is isiméir í sin, ní comhdhúil nua.
That is an isomer, not a new compound.
Tharraing sí léaráid den isiméir ar an gclár.
She drew a diagram of the isomer on the board.

Other nouns in Irish

More everyday Irish nouns to learn next.

Isomer in Irish: frequently asked questions

What is the Irish for isomer?

The Irish for isomer is isiméir (pronounced “ISH-ih-mair”). It’s a feminine noun.

How do you pronounce isiméir in Irish?

Isiméir is said like “ISH-ih-mair” (IPA /ˈɪʃɪmʲeːrʲ/).

Does isiméir have a plural?

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

Why does isiméir sometimes have a t or h in front of it?

Irish nouns beginning with a vowel take a prefix after certain words: an isiméir (the isomer), a hisiméir (her isomer), a n-isiméir (their isomer).

What is the word for isomerism?

The phenomenon is called isiméireacht, while a single compound is an isiméir.

Learn Irish by
actually speaking it

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

7-day free trial. Cancel anytime.

The HeyRua app home screen