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Cross product in Irish (Trasiolrach): Meaning, Pronunciation, Usage

The Irish for cross product is trasiolrach, a masculine noun (plural trasiolraigh).
Updated October 2026Report a mistake

How to say “cross product” in Irish

Irish:
trasiolrach
English:
cross product
Word type:
noun
Gender:
masculine
Pronunciation:
“TRAS-ul-ur-ukh”  /ˈt̪ˠɾˠasˠʊl̪ˠəɾˠəx/
Various forms
Plural:
trasiolraigh (cross products)
Genitive singular:
trasiolraigh, an trasiolraigh (e.g. luach an trasiolraigh, the value of the cross product)
Genitive plural:
trasiolrach, na dtrasiolrach (e.g. ríomh na dtrasiolrach, the calculation of the cross products)

What does “trasiolrach” mean?

cross product
In mathematics, the vector product of two vectors, which gives a vector perpendicular to both.Also: vector product.

“Trasiolrach” with the article

The plural of cross product in Irish is trasiolraigh. Here is trasiolrach after the article (an t-alt), in the singular and the plural.

an trasiolrach
the cross product
No change after an
na trasiolraigh
the cross products
Plural: no change after na

“Trasiolrach” in a sentence: Irish examples

Common Irish sentences using trasiolrach, the Irish word for cross product.

Ríomh an trasiolrach den dá veicteoir seo.
Calculate the cross product of these two vectors.
Is veicteoir é trasiolrach, ní scálach.
A cross product is a vector, not a scalar.
Tá treo an trasiolraigh ingearach leis an dá veicteoir.
The direction of the cross product is perpendicular to both vectors.
D'fhoghlaimíomar faoi thrasiolraigh sa rang inniu.
We learned about cross products in class today.
Rinne mé botún i mo thrasiolrach.
I made a mistake in my cross product.
Úsáidtear an trasiolrach go minic san fhisic.
The cross product is often used in physics.
Bhí ceist ar thrasiolraigh sa scrúdú.
There was a question on cross products in the exam.

Other nouns in Irish

More everyday Irish nouns to learn next.

Cross product in Irish: frequently asked questions

What is the Irish for cross product?

The Irish for cross product is trasiolrach (pronounced “TRAS-ul-ur-ukh”). It’s a masculine noun and the plural is trasiolraigh.

How do you pronounce trasiolrach in Irish?

Trasiolrach is said like “TRAS-ul-ur-ukh” (IPA /ˈt̪ˠɾˠasˠʊl̪ˠəɾˠəx/).

What is the plural of cross product in Irish?

The plural of trasiolrach is trasiolraigh; with the article, na trasiolraigh means “the cross products”. The genitive plural is trasiolrach, as in ríomh na dtrasiolrach (the calculation of the cross products).

Why does trasiolrach change to thrasiolrach or dtrasiolrach?

Irish changes the start of some words after certain words. After mo (my) trasiolrach becomes mo thrasiolrach (lenition), and after ár (our) or i (in) it becomes ár dtrasiolrach (eclipsis).

How is 'trasiolrach' different from 'iolrach'?

'Iolrach' is a product in general, the result of multiplying, while 'trasiolrach' is specifically the cross product of vectors, formed with the prefix 'tras-' meaning cross.

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