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

At the same time, the researchers are also studying how to turn the leftover seaweed biomass into chemicals, fuel, and fertilizer. — New Atlas, 27 July 2026

Scientists are also developing production methods that use algae, biomass, and municipal waste. — Aamir Khollam, Interesting Engineering, 24 July 2026

As plants growing in containers mature, their biomass increases both above and below the soil line. — Mary Marlowe Leverette, Southern Living, 15 July 2026

Research has shown that adding microbes, such as arbuscular mycorrhizal fungi, near plant roots can increase plant biomass by nearly 50%. — Esther Ndumi Ngumbi, The Conversation, 8 July 2026

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)