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Obtuse angle in Irish (Maoluillinn): Meaning, Pronunciation, Usage

The Irish for obtuse angle is maoluillinn, a feminine noun (plural maoluillinneacha).
Updated October 2026Report a mistake

How to say “obtuse angle” in Irish

Irish:
maoluillinn
English:
obtuse angle
Word type:
noun
Gender:
feminine
Pronunciation:
“MWEEL-il-in”  /ˈmˠiːlˠˌɪlʲɪnʲ/
Various forms
Plural:
maoluillinneacha (obtuse angles)
Genitive singular:
maoluillinne, na maoluillinne (e.g. méid na maoluillinne, the size of the obtuse angle)
Genitive plural:
maoluillinneacha, na maoluillinneacha (e.g. suim na maoluillinneacha, the sum of the obtuse angles)

What does “maoluillinn” mean?

obtuse angle
An angle greater than ninety degrees but less than one hundred and eighty degrees.Also: obtuse, blunt angle.

“Maoluillinn” with the article

The plural of obtuse angle in Irish is maoluillinneacha. Here is maoluillinn after the article (an t-alt), in the singular and the plural.

an mhaoluillinn
the obtuse angle
Lenition: m becomes mh after an (feminine noun)
na maoluillinneacha
the obtuse angles
Plural: no change after na

“Maoluillinn” in a sentence: Irish examples

Common Irish sentences using maoluillinn, the Irish word for obtuse angle.

Is maoluillinn í an uillinn seo.
This angle is an obtuse angle.
Tá an mhaoluillinn níos mó ná nócha céim.
The obtuse angle is greater than ninety degrees.
Tarraing maoluillinn i do chóipleabhar.
Draw an obtuse angle in your copybook.
Tomhais méid na maoluillinne le huillinntomhas.
Measure the size of the obtuse angle with a protractor.
Níl ach maoluillinn amháin i dtriantán maoluilleach.
An obtuse triangle has only one obtuse angle.
Cé mhéad maoluillinn atá sa chruth seo?
How many obtuse angles are in this shape?
Rinne mé botún sa mhaoluillinn ar an scrúdpháipéar.
I made a mistake with the obtuse angle on the exam paper.

Other nouns in Irish

More everyday Irish nouns to learn next.

Obtuse angle in Irish: frequently asked questions

What is the Irish for obtuse angle?

The Irish for obtuse angle is maoluillinn (pronounced “MWEEL-il-in”). It’s a feminine noun and the plural is maoluillinneacha.

How do you pronounce maoluillinn in Irish?

Maoluillinn is said like “MWEEL-il-in” (IPA /ˈmˠiːlˠˌɪlʲɪnʲ/).

What is the plural of obtuse angle in Irish?

The plural of maoluillinn is maoluillinneacha; with the article, na maoluillinneacha means “the obtuse angles”. The genitive plural is maoluillinneacha, as in suim na maoluillinneacha (the sum of the obtuse angles).

Why does maoluillinn change to mhaoluillinn?

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

What are the other kinds of angle called in Irish?

An acute angle is 'géaruillinn' and a right angle is 'dronuillinn'; 'maoluillinn' is built from 'maol' (blunt) and 'uillinn' (angle).

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