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Dilution in Irish (Caolúchán): Meaning, Pronunciation, Usage

‘caolúchán’ also means: narrowing

The Irish for dilution is caolúchán, a masculine noun.
Updated October 2026Report a mistake

How to say “dilution” in Irish

Irish:
caolúchán
English:
dilution, narrowing
Word type:
noun
Gender:
masculine
Pronunciation:
“KWEEL-oo-khawn”  /ˈkiːluːxaːn/
Various forms
Genitive singular:
caolúcháin, an chaolúcháin (e.g. ráta an chaolúcháin, the rate of dilution)

What does “caolúchán” mean?

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

dilution
The act of making a liquid thinner or weaker by adding water or another liquid.Also: diluting, thinning, attenuation.
1 other meaning: narrowing
2narrowing
The act or process of making something narrower or thinner.Also: thinning, tapering.

“Caolúchán” with the article

Here is caolúchán after the article (an t-alt).

an caolúchán
the dilution
No change after an

“Caolúchán” in a sentence: Irish examples

Common Irish sentences using caolúchán, the Irish word for dilution.

Tá caolúchán ag teastáil sula n-ólann tú é.
It needs diluting before you drink it.
Rinneadh an caolúchán le huisce glan.
The dilution was done with clean water.
Léigh na treoracha faoi chaolúchán an tuaslagáin.
Read the instructions about diluting the solution.
Bhí an caolúchán rólag, mar sin bhí an deoch láidir.
The dilution was insufficient, so the drink was strong.
Is cuid thábhachtach den triail é an caolúchán.
The dilution is an important part of the experiment.
Tharla caolúchán ar an dath sa ghrian.
The colour became weaker in the sun.
Ní mór céim an chaolúcháin a dhéanamh go cúramach.
The dilution step must be done carefully.

Other nouns in Irish

More everyday Irish nouns to learn next.

Dilution in Irish: frequently asked questions

What is the Irish for dilution?

The Irish for dilution is caolúchán (pronounced “KWEEL-oo-khawn”). It’s a masculine noun. Depending on context it can also mean narrowing.

How do you pronounce caolúchán in Irish?

Caolúchán is said like “KWEEL-oo-khawn” (IPA /ˈkiːluːxaːn/).

Does caolúchán have a plural?

No plural form is given for caolúchán in the standard. Many abstract and mass nouns in Irish have no plural.

Does caolúchán have more than one meaning?

Yes. Caolúchán can mean dilution or narrowing, depending on context; the first is the most common.

Why does caolúchán change to chaolúchán or gcaolúchán?

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

What is the opposite of caolúchán?

The opposite idea, concentration, is usually tiúchan, as in tiúchan an tuaslagáin, the concentration of the solution.

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