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Isomerism in Irish (Isiméireacht): Meaning, Pronunciation, Usage

The Irish for isomerism is isiméireacht, a feminine noun (plural isiméireachtaí).
Updated October 2026Report a mistake

How to say “isomerism” in Irish

Irish:
isiméireacht
English:
isomerism
Word type:
noun
Gender:
feminine, third declension
Pronunciation:
“ISH-im-ay-ruhkht”  /ˈɪʃɪmʲeːɾʲəxt̪ˠ/
Various forms
Plural:
isiméireachtaí (isomerisms)
Genitive singular:
isiméireachta, na hisiméireachta (e.g. cineálacha isiméireachta, types of isomerism)
Genitive plural:
isiméireachtaí, na n-isiméireachtaí (e.g. staidéar ar isiméireachtaí éagsúla, a study of various isomerisms)

What does “isiméireacht” mean?

isomerism
In chemistry, the existence of compounds with the same formula but a different arrangement of atoms.Also: isomery, structural isomerism.

“Isiméireacht” with the article

The plural of isomerism in Irish is isiméireachtaí. Here is isiméireacht after the article (an t-alt), in the singular and the plural.

an isiméireacht
the isomerism
No change: feminine nouns starting with a vowel keep their form after an
na hisiméireachtaí
the isomerisms
Plural: na adds h before a vowel

“Isiméireacht” in a sentence: Irish examples

Common Irish sentences using isiméireacht, the Irish word for isomerism.

Is coincheap tábhachtach sa cheimic í an isiméireacht.
Isomerism is an important concept in chemistry.
Mhínigh an múinteoir isiméireacht dúinn inniu.
The teacher explained isomerism to us today.
Tá sampla maith isiméireachta sa leabhar.
There is a good example of isomerism in the book.
Foghlaimímid faoi isiméireacht sa rang ceimice.
We learn about isomerism in chemistry class.
Tá dhá chineál isiméireachta ann.
There are two kinds of isomerism.
Bhí ceist ar an isiméireacht sa scrúdú.
There was a question on isomerism in the exam.
Déantar cur síos ar isiméireachtaí éagsúla sa chaibidil seo.
Various isomerisms are described in this chapter.

Other nouns in Irish

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Isomerism in Irish: frequently asked questions

What is the Irish for isomerism?

The Irish for isomerism is isiméireacht (pronounced “ISH-im-ay-ruhkht”). It’s a feminine noun and the plural is isiméireachtaí.

How do you pronounce isiméireacht in Irish?

Isiméireacht is said like “ISH-im-ay-ruhkht” (IPA /ˈɪʃɪmʲeːɾʲəxt̪ˠ/).

What is the plural of isomerism in Irish?

The plural of isiméireacht is isiméireachtaí; with the article, na hisiméireachtaí means “the isomerisms”. The genitive plural is isiméireachtaí, as in staidéar ar isiméireachtaí éagsúla (a study of various isomerisms).

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

Irish nouns beginning with a vowel take a prefix after certain words: an isiméireacht (the isomerism), a hisiméireacht (her isomerism), a n-isiméireacht (their isomerism), na hisiméireachtaí (the isomerisms).

How is 'isiméireacht' related to 'isiméir'?

'Isiméir' means an isomer, a single compound, while 'isiméireacht' is the phenomenon of isomerism.

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