HeyRua Get the app

Biomass in Irish (Bithmhais): Meaning, Pronunciation, Usage

The Irish for biomass is bithmhais, a feminine noun.
Updated October 2026Report a mistake

How to say “biomass” in Irish

Irish:
bithmhais
English:
biomass
Word type:
noun
Gender:
feminine, second declension
Pronunciation:
“BIH-wash”  /ˈbʲɪhwəʃ/
Various forms
Genitive singular:
bithmhaise, na bithmhaise (e.g. fuinneamh bithmhaise, biomass energy)

What does “bithmhais” mean?

biomass
Organic material from plants and animals, especially when used as a source of fuel or energy.Also: organic fuel, plant matter.

“Bithmhais” with the article

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

an bhithmhais
the biomass
Lenition: b becomes bh after an (feminine noun)

“Bithmhais” in a sentence: Irish examples

Common Irish sentences using bithmhais, the Irish word for biomass.

Is foinse fuinnimh in-athnuaite í an bhithmhais.
Biomass is a renewable energy source.
Dóitear bithmhais chun leictreachas a ghiniúint.
Biomass is burned to generate electricity.
Tá stáisiún bithmhaise á thógáil in aice an bhaile.
A biomass station is being built near the town.
Úsáidtear adhmad mar bhithmhais go minic.
Wood is often used as biomass.
Tá suim mhór ag an rialtas sa bhithmhais.
The government is very interested in biomass.
Tagann an bhithmhais seo ó fhuílleach feirme.
This biomass comes from farm waste.
D'fhoghlaimíomar faoi bhithmhais ar scoil inniu.
We learned about biomass at school today.

Other nouns in Irish

More everyday Irish nouns to learn next.

Biomass in Irish: frequently asked questions

What is the Irish for biomass?

The Irish for biomass is bithmhais (pronounced “BIH-wash”). It’s a feminine noun.

How do you pronounce bithmhais in Irish?

Bithmhais is said like “BIH-wash” (IPA /ˈbʲɪhwəʃ/).

Does bithmhais have a plural?

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

Why does bithmhais change to bhithmhais or mbithmhais?

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

How is 'bithmhais' formed?

It combines the prefix 'bith-' (life, bio-) with 'mais' (mass), just like English biomass. The same prefix appears in 'bithbhreosla' (biofuel).

Learn Irish by
actually speaking it

Learn everyday Irish words like bithmhais through guided conversation with Rua.

7-day free trial. Cancel anytime.

The HeyRua app home screen