bio·​mass | \ ˈbī-ō-ˌmas How to pronounce biomass (audio) \

Definition of biomass

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

An industry considered sustainable today can seem nefarious tomorrow—just look at biomass. Jon Sindreu, WSJ, "Biomass Mess Shows Trouble with Sustainable Investing," 7 Mar. 2019 The Partnership for Policy Integrity, a U.S. environmental group, has launched an all-out attack on biomass—energy generated from burning living matter, like sugar cane, wood and waste. Jon Sindreu, WSJ, "Biomass Mess Shows Trouble with Sustainable Investing," 7 Mar. 2019 The ultimate goal of this project is make more efficient woody biomass. David Grossman, Popular Mechanics, "The Gribble Worm Could Hold Secrets for Cheaper Renewable Energy," 5 Dec. 2018 In biology, biomass pyramids chart the relative number or weight of one class of organism compared to another organism within the same ecosystem. Casey Newton, The Verge, "How Kevin Hart tweeted himself out of a job hosting the Oscars," 8 Dec. 2018 While Texas holds more than 40 percent of the Gulf's red-snapper biomass, the state's private-boat anglers accounted for only 5.5 percent of the 2006-15 snapper landings. Shannon Tompkins, Houston Chronicle, "State seeks longer red-snapper season in federal proposal," 17 Mar. 2018 The finished logs are then usually hauled by truck to a commercial timber mill or shipped to a biomass plant to be converted into energy, said Mr. Edelson of the Nature Conservancy. Jim Carlton, WSJ, "Facing Deadlier Fires, California Tries Something New: More Logging," 17 Nov. 2018 According to National Geographic, stunning new calculations show that in the Arctic tundra, arctic wolf spiders outweigh arctic wolves in biomass by a ratio of 80 to 1. Elly Belle, Teen Vogue, "Arctic Wolf Spiders Are Getting Bigger and It Could Slow Part of Climate Change," 24 July 2018 Wood emissions The opposition campaign has highlighted the absence of carbon fees on paper and pulp mills, and a Kettle Falls biomass power plant. Hal Bernton, The Seattle Times, "Who would pay a state carbon fee on November ballot, and who gets a pass?," 17 Sep. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'biomass.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of biomass

1931, in the meaning defined at sense 1

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Last Updated

15 Apr 2019

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Time Traveler for biomass

The first known use of biomass was in 1931

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More Definitions for biomass


bio·​mass | \ -ˌmas How to pronounce biomass (audio) \

Medical Definition of biomass

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

More from Merriam-Webster on biomass

Rhyming Dictionary: Words that rhyme with biomass Encyclopedia article about biomass

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