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Back-pressure in Irish (Frithbhrú): Meaning, Pronunciation, Usage

The Irish for back-pressure is frithbhrú, a masculine noun.
Updated October 2026Report a mistake

How to say “back-pressure” in Irish

Irish:
frithbhrú
English:
back-pressure
Word type:
noun
Gender:
masculine, fourth declension
Pronunciation:
“FRIH-vroo”  /ˈfʲɾʲɪˌvˠɾˠuː/
Various forms
Genitive singular:
frithbhrú, an fhrithbhrú (e.g. méid an fhrithbhrú, the amount of back-pressure)

What does “frithbhrú” mean?

back-pressure
Pressure that acts against the flow of a fluid or gas, or against a force pushing in the opposite direction.Also: counter-pressure, backpressure, opposing pressure.

“Frithbhrú” with the article

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

an frithbhrú
the back-pressure
No change after an

“Frithbhrú” in a sentence: Irish examples

Common Irish sentences using frithbhrú, the Irish word for back-pressure.

Cruthaíonn an píopa cúng frithbhrú san inneall.
The narrow pipe creates back-pressure in the engine.
Tá an frithbhrú ró-ard sa chóras.
The back-pressure is too high in the system.
Laghdaigh an t-innealtóir an frithbhrú.
The engineer reduced the back-pressure.
Thomhais siad leibhéal an fhrithbhrú.
They measured the level of back-pressure.
Is féidir le frithbhrú dochar a dhéanamh don chaidéal.
Back-pressure can damage the pump.
Tharla méadú ar an bhfrithbhrú sa sceithphíopa.
There was an increase in back-pressure in the exhaust pipe.
Ní raibh aon fhrithbhrú le brath.
No back-pressure could be detected.

Other nouns in Irish

More everyday Irish nouns to learn next.

Back-pressure in Irish: frequently asked questions

What is the Irish for back-pressure?

The Irish for back-pressure is frithbhrú (pronounced “FRIH-vroo”). It’s a masculine noun.

How do you pronounce frithbhrú in Irish?

Frithbhrú is said like “FRIH-vroo” (IPA /ˈfʲɾʲɪˌvˠɾˠuː/).

Does frithbhrú have a plural?

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

Why does frithbhrú change to fhrithbhrú or bhfrithbhrú?

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

How is 'frithbhrú' formed?

It combines the prefix 'frith-' (counter, against) with 'brú' (pressure), which is lenited after the prefix, giving 'frithbhrú'.

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