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Decimal fraction in Irish (Deachúil): Meaning, Pronunciation, Usage

‘deachúil’ also means: decimal

The Irish for decimal fraction is deachúil, a feminine noun (plural deachúlacha).
Updated October 2026Report a mistake

How to say “decimal fraction” in Irish

Irish:
deachúil
English:
decimal fraction
Word type:
noun
Gender:
feminine
Pronunciation:
“DYAKH-ool”  /ˈdʲaxuːlʲ/
Various forms
Plural:
deachúlacha (decimal fractions)
Genitive singular:
deachúla, na deachúla (e.g. luach na deachúla, the value of the decimal)
Genitive plural:
deachúlacha, na ndeachúlacha (e.g. suimiú na ndeachúlacha, the adding of the decimals)

What does “deachúil” mean?

decimal fraction
A number written with a decimal point, such as 0.5 or 3.25; a fraction expressed in tenths, hundredths and so on.Also: decimal number, decimal place figure, decimal point number.
Other entries for “deachúil”

The same spelling has its own page as:

“Deachúil” with the article

The plural of decimal fraction in Irish is deachúlacha. Here is deachúil after the article (an t-alt), in the singular and the plural.

an deachúil
the decimal fraction
No change: d and t are not lenited after an
na deachúlacha
the decimal fractions
Plural: no change after na

“Deachúil” in a sentence: Irish examples

Common Irish sentences using deachúil, the Irish word for decimal fraction.

Scríobh an deachúil sin mar chodán.
Write that decimal as a fraction.
Is deachúil í 0.75.
0.75 is a decimal.
Táimid ag foghlaim deachúlacha ar scoil inniu.
We are learning decimals at school today.
Cuir an pointe sa deachúil san áit cheart.
Put the point in the right place in the decimal.
Bhí mo dheachúil mícheart sa cheist dheireanach.
My decimal was wrong in the last question.
Tá suimiú na ndeachúlacha éasca go leor.
Adding decimals is easy enough.
Cén chéad digit tar éis phointe na deachúla?
What is the first digit after the decimal point?

Other nouns in Irish

More everyday Irish nouns to learn next.

Decimal fraction in Irish: frequently asked questions

What is the Irish for decimal fraction?

The Irish for decimal fraction is deachúil (pronounced “DYAKH-ool”). It’s a feminine noun and the plural is deachúlacha.

How do you pronounce deachúil in Irish?

Deachúil is said like “DYAKH-ool” (IPA /ˈdʲaxuːlʲ/).

What is the plural of decimal fraction in Irish?

The plural of deachúil is deachúlacha; with the article, na deachúlacha means “the decimal fractions”. The genitive plural is deachúlacha, as in suimiú na ndeachúlacha (the adding of the decimals).

Does deachúil have more than one meaning?

Deachúil also has its own entry as an adjective meaning decimal.

Why does deachúil change to dheachúil or ndeachúil?

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

How do I say 'decimal point' in Irish?

It is 'pointe deachúlach', using the adjective; the noun 'deachúil' means a decimal number itself.

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