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Heredity in Irish (Oidhreachtúlacht): Meaning, Pronunciation, Usage

The Irish for heredity is oidhreachtúlacht, a feminine noun (plural oidhreachtúlachtaí).
Updated October 2026Report a mistake

How to say “heredity” in Irish

Irish:
oidhreachtúlacht
English:
heredity
Word type:
noun
Gender:
feminine, third declension
Pronunciation:
“IR-ukht-oo-lukht”  /ˈəiɾʲəxt̪ˠuːl̪ˠəxt̪ˠ/
Various forms
Plural:
oidhreachtúlachtaí (heredities)
Genitive singular:
oidhreachtúlachta, na hoidhreachtúlachta (e.g. staidéar na hoidhreachtúlachta, the study of heredity)
Genitive plural:
oidhreachtúlachtaí, na n-oidhreachtúlachtaí (e.g. cineálacha na n-oidhreachtúlachtaí, the kinds of heredities)

What does “oidhreachtúlacht” mean?

heredity
The passing on of physical or mental characteristics from parents to their offspring.Also: inheritance, hereditary nature, genetic inheritance.

“Oidhreachtúlacht” with the article

The plural of heredity in Irish is oidhreachtúlachtaí. Here is oidhreachtúlacht after the article (an t-alt), in the singular and the plural.

an oidhreachtúlacht
the heredity
No change: feminine nouns starting with a vowel keep their form after an
na hoidhreachtúlachtaí
the heredities
Plural: na adds h before a vowel

“Oidhreachtúlacht” in a sentence: Irish examples

Common Irish sentences using oidhreachtúlacht, the Irish word for heredity.

Bíonn tionchar mór ag an oidhreachtúlacht ar an tsláinte.
Heredity has a big influence on health.
Is cuid den oidhreachtúlacht é dath na súl.
Eye colour is part of heredity.
Rinneamar staidéar ar dhlíthe na hoidhreachtúlachta inniu.
We studied the laws of heredity today.
Tá suim mhór aici san oidhreachtúlacht.
She is very interested in heredity.
Ní hé an oidhreachtúlacht amháin a mhíníonn é.
Heredity alone does not explain it.
Labhair an t-eolaí faoi oidhreachtúlacht agus timpeallacht.
The scientist spoke about heredity and environment.
Tá ról ag oidhreachtúlacht i ngalair áirithe.
Heredity plays a role in certain diseases.

Other nouns in Irish

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Heredity in Irish: frequently asked questions

What is the Irish for heredity?

The Irish for heredity is oidhreachtúlacht (pronounced “IR-ukht-oo-lukht”). It’s a feminine noun and the plural is oidhreachtúlachtaí.

How do you pronounce oidhreachtúlacht in Irish?

Oidhreachtúlacht is said like “IR-ukht-oo-lukht” (IPA /ˈəiɾʲəxt̪ˠuːl̪ˠəxt̪ˠ/).

What is the plural of heredity in Irish?

The plural of oidhreachtúlacht is oidhreachtúlachtaí; with the article, na hoidhreachtúlachtaí means “the heredities”. The genitive plural is oidhreachtúlachtaí, as in cineálacha na n-oidhreachtúlachtaí (the kinds of heredities).

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

Irish nouns beginning with a vowel take a prefix after certain words: an oidhreachtúlacht (the heredity), a hoidhreachtúlacht (her heredity), a n-oidhreachtúlacht (their heredity), na hoidhreachtúlachtaí (the heredities).

What is the difference between oidhreachtúlacht and oidhreacht?

Oidhreacht means inheritance or heritage in general, such as property or culture, while oidhreachtúlacht is the biological sense of heredity.

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