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Vector in Irish (Veicteoir): Meaning, Pronunciation, Usage

The Irish for vector is veicteoir, a masculine noun (plural veicteoirí).
Updated October 2026Report a mistake

How to say “vector” in Irish

Irish:
veicteoir
English:
vector
Word type:
noun
Gender:
masculine, third declension
Pronunciation:
“VEK-tyohr”  /ˈvʲɛkʲtʲoːrʲ/
Various forms
Plural:
veicteoirí (vectors)
Genitive singular:
veicteora, an veicteora (e.g. fad an veicteora, the length of the vector)
Genitive plural:
veicteoirí, na veicteoirí (e.g. suim na veicteoirí, the sum of the vectors)

What does “veicteoir” mean?

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

vector
In mathematics and physics, a quantity that has both size and direction, often shown as an arrow.Also: vector quantity, direction quantity.
1 other meaning:
2vector
In biology and medicine, an organism, such as an insect, that carries a disease from one host to another.Also: disease carrier, carrier.

“Veicteoir” with the article

The plural of vector in Irish is veicteoirí. Here is veicteoir after the article (an t-alt), in the singular and the plural.

an veicteoir
the vector
No change after an
na veicteoirí
the vectors
Plural: no change after na

“Veicteoir” in a sentence: Irish examples

Common Irish sentences using veicteoir, the Irish word for vector.

Is veicteoir é an treoluas.
Velocity is a vector.
Tarraing an veicteoir ar an ngreille.
Draw the vector on the grid.
Faigh méid an veicteora seo.
Find the magnitude of this vector.
Cuir an dá veicteoir le chéile.
Add the two vectors together.
Tá na veicteoirí sin comhthreomhar.
Those vectors are parallel.
Is veicteoir maláire í an mhuiscít.
The mosquito is a vector of malaria.
Tá botún i mo veicteoir, sílim.
I think there's a mistake in my vector.

Other nouns in Irish

More everyday Irish nouns to learn next.

Vector in Irish: frequently asked questions

What is the Irish for vector?

The Irish for vector is veicteoir (pronounced “VEK-tyohr”). It’s a masculine noun and the plural is veicteoirí.

How do you pronounce veicteoir in Irish?

Veicteoir is said like “VEK-tyohr” (IPA /ˈvʲɛkʲtʲoːrʲ/).

What is the plural of vector in Irish?

The plural of veicteoir is veicteoirí; with the article, na veicteoirí means “the vectors”. The genitive plural is veicteoirí, as in suim na veicteoirí (the sum of the vectors).

What is the opposite of veicteoir in maths?

A quantity with size but no direction is a scálach (scalar), whereas a veicteoir has both size and direction.

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