biomass

noun

bio·​mass ˈbī-ō-ˌmas 

1

: the amount of living matter (as in a unit area or volume of habitat)

2

: plant materials and animal waste used especially as a source of fuel

Examples of biomass in a Sentence

Recent Examples on the Web

Almost more fascinating is the ground cover, with up to 50 species per square meter, including some plants that are thousands of years old, with the vast majority of their biomass below ground. —Reed Frederick Noss, The Conversation, 16 Apr. 2025

Through the accelerator, Living Ink is collaborating with AB InBev to transform the company’s waste biomass into Algae Black pigments. —Angela Velasquez, Sourcing Journal, 31 Mar. 2025

This means Azolla can grow explosively, doubling its biomass in just two to three days under the right conditions. —Scott Travers, Forbes, 7 Mar. 2025

This includes shifting away from fossil fuels toward greener electricity sources such as wind, solar and the more controversial biomass. —Jasmin Malik Chua, Sourcing Journal, 20 May 2025

Word History

First Known Use

1931, in the meaning defined at sense 1

Kids Definition

biomass

noun

bio·​mass

ˈbī-ō-ˌmas

1

: the amount of living matter (as in an area or volume of habitat)

2

: plant materials and animal waste used especially as a source of fuel

Medical Definition

biomass

noun

bio·​mass -ˌmas 

: the amount of living matter (as in a unit area or volume of habitat)