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Sound wave in Irish (Fuaimthonn): Meaning, Pronunciation, Usage

The Irish for sound wave is fuaimthonn, a feminine noun (plural fuaimthonnta).
Updated October 2026Report a mistake

How to say “sound wave” in Irish

Irish:
fuaimthonn
English:
sound wave
Word type:
noun
Gender:
feminine
Pronunciation:
“FOO-um-hown”  /ˈfuəmʲˌhɔn̪ˠ/
Various forms
Plural:
fuaimthonnta (sound waves)
Genitive singular:
fuaimthoinne, na fuaimthoinne (e.g. luas na fuaimthoinne, the speed of the sound wave)
Genitive plural:
fuaimthonnta, na bhfuaimthonnta (e.g. luas na bhfuaimthonnta, the speed of sound waves)

What does “fuaimthonn” mean?

sound wave
A wave of pressure that travels through air, water or another medium and carries sound.Also: acoustic wave, sonic wave.

“Fuaimthonn” with the article

The plural of sound wave in Irish is fuaimthonnta. Here is fuaimthonn after the article (an t-alt), in the singular and the plural.

an fhuaimthonn
the sound wave
Lenition: f becomes fh after an (feminine noun)
na fuaimthonnta
the sound waves
Plural: no change after na

“Fuaimthonn” in a sentence: Irish examples

Common Irish sentences using fuaimthonn, the Irish word for sound wave.

Is tonn bhrú í fuaimthonn.
A sound wave is a pressure wave.
Taistealaíonn an fhuaimthonn tríd an aer.
The sound wave travels through the air.
Tomhaiseann an gléas seo minicíocht na fuaimthoinne.
This device measures the frequency of the sound wave.
Ní féidir le fuaimthonnta taisteal i bhfolús.
Sound waves cannot travel in a vacuum.
Bhíomar ag foghlaim faoi fhuaimthonnta sa rang fisice.
We were learning about sound waves in physics class.
Bíonn fuaimthonnta níos tapúla in uisce ná in aer.
Sound waves are faster in water than in air.
Léirigh an t-osciloscóp an fhuaimthonn go soiléir.
The oscilloscope showed the sound wave clearly.

Other nouns in Irish

More everyday Irish nouns to learn next.

Sound wave in Irish: frequently asked questions

What is the Irish for sound wave?

The Irish for sound wave is fuaimthonn (pronounced “FOO-um-hown”). It’s a feminine noun and the plural is fuaimthonnta.

How do you pronounce fuaimthonn in Irish?

Fuaimthonn is said like “FOO-um-hown” (IPA /ˈfuəmʲˌhɔn̪ˠ/).

What is the plural of sound wave in Irish?

The plural of fuaimthonn is fuaimthonnta; with the article, na fuaimthonnta means “the sound waves”. The genitive plural is fuaimthonnta, as in luas na bhfuaimthonnta (the speed of sound waves).

Why does fuaimthonn change to fhuaimthonn or bhfuaimthonn?

Irish changes the start of some words after certain words. After mo (my) fuaimthonn becomes m'fhuaimthonn (lenition), and after ár (our) or i (in) it becomes ár bhfuaimthonn (eclipsis).

How is 'fuaimthonn' formed?

It is a compound of 'fuaim' (sound) and 'tonn' (wave), with the t of 'tonn' lenited to 'th', and it keeps the feminine gender of 'tonn'.

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