biomass

noun

bio·​mass ˈbī-ō-ˌmas How to pronounce biomass (audio)
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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Cothran also notes that this beneficial plant can be chopped and dropped multiple times each season for a nutrient-rich biomass and mulch. — Sj McShane, Martha Stewart, 26 June 2026 In contrast, a late planting date, especially after the first fall frost, can reduce cover crop establishment, winter survival, and biomass production. — Nora Doonan, Hartford Courant, 28 June 2026 That included seafloor mapping data, water-column observations, and measurements of marine biomass. — Aamir Khollam, Interesting Engineering, 24 June 2026 And the use of microbial enrichment tended to increase above-ground biomass in native broadleaf woodland areas by 13% after four years, with the greatest benefits seen in the first year after planting. — Jamie Hailstone, Forbes.com, 30 June 2026 See All Example Sentences for biomass

Word History

First Known Use

1931, in the meaning defined at sense 1

Time Traveler
The first known use of biomass was in 1931

Browse Nearby Words

biomarker
biomass
biomaterial
See all Nearby Words

Cite this Entry

“Biomass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biomass. Accessed 8 Jul. 2026.

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Kids Definition

biomass

noun
bio·​mass ˈbī-ō-ˌmas How to pronounce biomass (audio)
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 How to pronounce biomass (audio)
: the amount of living matter (as in a unit area or volume of habitat)

More from Merriam-Webster on biomass

Britannica.com: Encyclopedia article about biomass

Last Updated: - Updated example sentences
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