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

Make Home Improvements by the End of the Year The remarkably vast Energy Efficient Home Improvement Credit provides up to $2,000 toward qualified heat pumps, water heaters, biomass stoves, or biomass boilers. —Tik Root, Wired News, 12 July 2025

The environmental impact would be significant: diverting biomass from landfills and reducing diesel combustion could prevent approximately 520,000 tons and 790,000 tons of CO₂ emissions, respectively. —David Blekhman, Forbes.com, 9 July 2025

Petroleum-free Algae ink, derived from renewable biomass, is an example of Trimco’s focus on reducing fossil fuel dependency. —Angela Velasquez, Sourcing Journal, 16 June 2025

At the same time, the world’s largest biomass company, Drax, is cutting down trees across North America with a promise to sell them as a replacement for fossil fuels. —Tom Brown, Wired News, 14 June 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)