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Binomial in Irish (Déthéarmach): Meaning, Pronunciation, Usage

The Irish for binomial is déthéarmach, a masculine noun (plural déthéarmaigh).
Updated October 2026Report a mistake

How to say “binomial” in Irish

Irish:
déthéarmach
English:
binomial
Word type:
noun
Gender:
masculine
Pronunciation:
“DAY-hayr-mukh”  /ˈdʲeːˌheːɾˠəmˠəx/
Various forms
Plural:
déthéarmaigh (binomials)
Genitive singular:
déthéarmaigh, an déthéarmaigh (e.g. teoirim an déthéarmaigh, the binomial theorem)
Genitive plural:
déthéarmach, na ndéthéarmach (e.g. iolrú na ndéthéarmach, the multiplication of the binomials)

What does “déthéarmach” mean?

binomial
In mathematics, an algebraic expression made up of two terms, such as a + b.Also: binomial expression, two-term expression.

“Déthéarmach” with the article

The plural of binomial in Irish is déthéarmaigh. Here is déthéarmach after the article (an t-alt), in the singular and the plural.

an déthéarmach
the binomial
No change after an
na déthéarmaigh
the binomials
Plural: no change after na

“Déthéarmach” in a sentence: Irish examples

Common Irish sentences using déthéarmach, the Irish word for binomial.

Is déthéarmach é x + y.
x + y is a binomial.
Scríobh an déthéarmach ar an gclár bán.
Write the binomial on the whiteboard.
Cearnaigh an déthéarmach seo, le do thoil.
Square this binomial, please.
Tá dhá théarma i ngach déthéarmach.
Every binomial has two terms.
Mhínigh an múinteoir teoirim an déthéarmaigh dúinn inniu.
The teacher explained the binomial theorem to us today.
Iolraigh an dá dhéthéarmach le chéile.
Multiply the two binomials together.
Tá déthéarmaigh go leor sa cheacht matamaitice seo.
There are lots of binomials in this maths lesson.

Other nouns in Irish

More everyday Irish nouns to learn next.

Binomial in Irish: frequently asked questions

What is the Irish for binomial?

The Irish for binomial is déthéarmach (pronounced “DAY-hayr-mukh”). It’s a masculine noun and the plural is déthéarmaigh.

How do you pronounce déthéarmach in Irish?

Déthéarmach is said like “DAY-hayr-mukh” (IPA /ˈdʲeːˌheːɾˠəmˠəx/).

What is the plural of binomial in Irish?

The plural of déthéarmach is déthéarmaigh; with the article, na déthéarmaigh means “the binomials”. The genitive plural is déthéarmach, as in iolrú na ndéthéarmach (the multiplication of the binomials).

Why does déthéarmach change to dhéthéarmach or ndéthéarmach?

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

Is déthéarmach also an adjective?

Yes, déthéarmach can be used as an adjective meaning binomial, as well as a noun for a two-term expression. Compare iltéarmach, a polynomial.

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