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Viscosity in Irish (Slaodacht): Meaning, Pronunciation, Usage

The Irish for viscosity is slaodacht, a feminine noun.
Updated October 2026Report a mistake

How to say “viscosity” in Irish

Irish:
slaodacht
English:
viscosity
Word type:
noun
Gender:
feminine
Pronunciation:
“SLEE-dukht”  /ˈsl̪ˠiːd̪ˠəxt̪ˠ/
Various forms
Genitive singular:
slaodachta, na slaodachta (e.g. tomhas slaodachta, measurement of viscosity)

What does “slaodacht” mean?

viscosity
The thickness of a liquid, or how slowly and heavily it flows.Also: thickness, stickiness, viscousness.

“Slaodacht” with the article

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

an tslaodacht
the viscosity
Feminine nouns take t before s after an

“Slaodacht” in a sentence: Irish examples

Common Irish sentences using slaodacht, the Irish word for viscosity.

Tá slaodacht ard ag an mil.
Honey has a high viscosity.
Athraíonn slaodacht na hola leis an teocht.
The viscosity of the oil changes with temperature.
Thomhaiseamar an tslaodacht sa tsaotharlann inniu.
We measured the viscosity in the lab today.
Laghdaíonn an teas slaodacht an leachta.
Heat reduces the viscosity of the liquid.
Is airí fisiceach í an tslaodacht.
Viscosity is a physical property.
Bhí difríocht mhór slaodachta idir an dá leacht.
There was a big difference in viscosity between the two liquids.
Ní thuigim fós cad is brí le slaodacht.
I still don't understand what viscosity means.

Other nouns in Irish

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Viscosity in Irish: frequently asked questions

What is the Irish for viscosity?

The Irish for viscosity is slaodacht (pronounced “SLEE-dukht”). It’s a feminine noun.

How do you pronounce slaodacht in Irish?

Slaodacht is said like “SLEE-dukht” (IPA /ˈsl̪ˠiːd̪ˠəxt̪ˠ/).

Does slaodacht have a plural?

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

Why does slaodacht change to shlaodacht?

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

What adjective is 'slaodacht' related to?

It comes from 'slaodach', meaning viscous or sluggish, related to 'slaod', a flowing mass or layer.

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