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Cosecant in Irish (Comhtheascaí): Meaning, Pronunciation, Usage

The Irish for cosecant is comhtheascaí, a masculine noun (plural comhtheascaithe).
Updated October 2026Report a mistake

How to say “cosecant” in Irish

Irish:
comhtheascaí
English:
cosecant
Word type:
noun
Gender:
masculine
Pronunciation:
“KOH-hask-ee”  /ˈkoːhaskiː/
Various forms
Plural:
comhtheascaithe (cosecants)
Genitive singular:
comhtheascaí, an chomhtheascaí (e.g. luach an chomhtheascaí, the value of the cosecant)
Genitive plural:
comhtheascaithe, na gcomhtheascaithe (e.g. tábla na gcomhtheascaithe, the table of cosecants)

What does “comhtheascaí” mean?

cosecant
In trigonometry, the cosecant of an angle: the reciprocal of its sine.Also: cosec, csc.

“Comhtheascaí” with the article

The plural of cosecant in Irish is comhtheascaithe. Here is comhtheascaí after the article (an t-alt), in the singular and the plural.

an comhtheascaí
the cosecant
No change after an
na comhtheascaithe
the cosecants
Plural: no change after na

“Comhtheascaí” in a sentence: Irish examples

Common Irish sentences using comhtheascaí, the Irish word for cosecant.

Is deilín den síneas é an comhtheascaí.
The cosecant is the reciprocal of the sine.
Faigh comhtheascaí na huillinne seo.
Find the cosecant of this angle.
Ríomh luach an chomhtheascaí ar an áireamhán.
Calculate the value of the cosecant on the calculator.
Tá na comhtheascaithe sa tábla ar chúl an leabhair.
The cosecants are in the table at the back of the book.
Níl comhtheascaí ag uillinn nialais.
An angle of zero has no cosecant.
Bhí ceist faoin gcomhtheascaí sa scrúdú.
There was a question about the cosecant in the exam.
Tarraing graf de na comhtheascaithe sin.
Draw a graph of those cosecants.

Other nouns in Irish

More everyday Irish nouns to learn next.

Cosecant in Irish: frequently asked questions

What is the Irish for cosecant?

The Irish for cosecant is comhtheascaí (pronounced “KOH-hask-ee”). It’s a masculine noun and the plural is comhtheascaithe.

How do you pronounce comhtheascaí in Irish?

Comhtheascaí is said like “KOH-hask-ee” (IPA /ˈkoːhaskiː/).

What is the plural of cosecant in Irish?

The plural of comhtheascaí is comhtheascaithe; with the article, na comhtheascaithe means “the cosecants”. The genitive plural is comhtheascaithe, as in tábla na gcomhtheascaithe (the table of cosecants).

Why does comhtheascaí change to chomhtheascaí or gcomhtheascaí?

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

How is comhtheascaí related to teascaí?

Teascaí is the secant, and adding comh- gives comhtheascaí, the cosecant, just as síneas (sine) gives comhshíneas (cosine).

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