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Breeding in Irish (Síolrú): Meaning, Pronunciation, Usage

‘síolrú’ also means: descent

The Irish for breeding is síolrú, a masculine noun. Ag síolrú is breeding, from the verb síolraigh.
Updated October 2026Report a mistake

How to say “breeding” in Irish

Irish:
síolrú
English:
breeding, descent
Word type:
noun (verbal noun)
Verbal noun of:
síolraigh, to breed (ag síolrú, breeding)
Gender:
masculine, fourth declension
Pronunciation:
“SHEE-ul-roo”  /ʃiəlˠɾˠuː/
Various forms
Genitive singular:
síolraithe, an tsíolraithe (e.g. séasúr an tsíolraithe, the breeding season)

What does “síolrú” mean?

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

breeding
The verbal noun of síolraigh: the act of producing offspring, breeding or reproducing.Also: reproduction, propagation, procreation.
1 other meaning: descent
2descent
The act of descending or being derived from an ancestor or source, as the verbal noun of síolraigh.Also: derivation, spreading.

“Síolrú” as a verbal noun

After ag, síolrú means breeding: it is the verbal noun of the verb síolraigh (to breed). A noun that follows it goes into the genitive.

agat
+
síolrúverbal noun
=
ag síolrúbreeding

“Síolrú” with the article

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

an síolrú
the breeding
No change after an

“Síolrú” in a sentence: Irish examples

Common Irish sentences using síolrú, the Irish word for breeding.

Tarlaíonn síolrú na n-éan san earrach.
The birds breed in spring.
Tá an síolrú tábhachtach do gach speiceas.
Reproduction is important for every species.
Foghlaimímid faoi shíolrú na bplandaí ar scoil.
We learn about plant reproduction at school.
Bíonn na hainmhithe ciúin le linn an tséasúir síolraithe.
The animals are quiet during the breeding season.
Is cuid den bhitheolaíocht é an síolrú.
Reproduction is part of biology.
Tá suim mhór aige i síolrú capall.
He is very interested in horse breeding.
Cuireann an fuacht isteach ar shíolrú na n-éisc.
The cold affects the breeding of the fish.

Other nouns in Irish

More everyday Irish nouns to learn next.

Breeding in Irish: frequently asked questions

What is the Irish for breeding?

The Irish for breeding is síolrú (pronounced “SHEE-ul-roo”). It’s a masculine noun. Depending on context it can also mean descent.

How do you pronounce síolrú in Irish?

Síolrú is said like “SHEE-ul-roo” (IPA /ʃiəlˠɾˠuː/).

Does síolrú have a plural?

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

Does síolrú have more than one meaning?

Yes. Síolrú can mean breeding or descent, depending on context; the first is the most common.

Why does síolrú change to shíolrú?

After words like mo (my) and do (your) the first letter is lenited: mo shíolrú. After ár (our) it stays ár síolrú, because s does not take eclipsis.

What is the difference between síolrú and pórú?

Both can mean breeding; pórú is the usual word for breeding animals or plants, while síolrú is more often used for reproduction or propagation in general and for descent from a source.

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