ENGLISH
REFERENCE

biomass

n. uncountable
C1 Advanced US //ˈbaɪəmæs// UK //bˌaɪəʊmˈæs// biomass

n. organic material that comes from plants and animals. People use this word when talking about renewable energy sources made from nature.

n. organic matter derived from living or recently living organisms, used as a source of fuel or raw material.


SIMPLE

Farmers use crop waste as biomass fuel.

CONTEXTUAL

The power plant burns wood chips and agricultural waste to generate electricity from biomass.

COMPLEX

Sustainable biomass production requires careful land management to ensure that carbon sequestration rates exceed the emissions generated during combustion and processing.

Origin

From bio- (prefix denoting organic life) + mass (“matter, material”).

© 2026 English Reference