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
Similar conditions at the end of 2025 allowed a biomass of algae to linger near the lake’s surface until the water began to freeze.
—
Andrew Paul, Popular Science, 29 Jan. 2026
Unlike wind and solar, which generate electricity without combustion emissions, biomass combines emissions from burning wood chips with those from processing, transport, and ongoing fuel extraction.
—Ken Silverstein, Forbes.com, 28 Jan. 2026
By using waste biomass and abundant minerals, the team is aiming for a circular economy model.
—Aman Tripathi, Interesting Engineering, 22 Jan. 2026
Using a plant growth-promoting rhizobacteria (PGPR) cocktail of Streptomyces and Agromyces-Bacillus to improve the metabolizing of nutrients and stimulate plant growth hormones, greenhouse kale and choy sum grew faster in height, leaf surface area, and shoot biomass.
—New Atlas, 4 Jan. 2026
See All Example Sentences for biomass
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Andrew Paul, Popular Science, 29 Jan. 2026
Unlike wind and solar, which generate electricity without combustion emissions, biomass combines emissions from burning wood chips with those from processing, transport, and ongoing fuel extraction.
—Ken Silverstein, Forbes.com, 28 Jan. 2026
By using waste biomass and abundant minerals, the team is aiming for a circular economy model.
—Aman Tripathi, Interesting Engineering, 22 Jan. 2026
Using a plant growth-promoting rhizobacteria (PGPR) cocktail of Streptomyces and Agromyces-Bacillus to improve the metabolizing of nutrients and stimulate plant growth hormones, greenhouse kale and choy sum grew faster in height, leaf surface area, and shoot biomass.
—New Atlas, 4 Jan. 2026
See All Example Sentences for biomass
Cite this Entry
“Biomass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biomass. Accessed 5 Feb. 2026.
Copy CitationKids 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)
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