biomass

BY-oh-mass /ˈbaɪ.oʊˌmæs/
nounC1TOEFLGREIELTS
academicscientific

Organic matter derived from living or recently living organisms, used as a renewable fuel source or industrial feedstock.

Encompasses plant materials, agricultural waste, wood pellets, and organic municipal refuse.

The story behind the word. Coined in ecological science in the early 20th century by joining Greek 'bios' (life) with Latin 'massa' (lump or body). It originally measured total living organism mass in an ecosystem before becoming an energy term in the 1970s.

Word relationships

  • organic matter: 'Organic matter' is a broad biological term; 'biomass' explicitly refers to organic matter quantified for energy production or ecology.
  • fossil fuel: Fossil fuels are subterranean carbon deposits millions of years old, whereas biomass comes from recent biological growth.

Commonly confused with

  • biofuel: 'Biomass' is raw organic solid material (like wood chips or crop leftovers); 'biofuel' is the refined liquid or gaseous fuel extracted from biomass.

Collocations

  • biomass energy
  • biomass plant
  • biomass combustion
  • woody biomass

Example sentences

  • "Converting agricultural residue into biomass fuel helps rural agricultural communities divert organic waste while producing localized electricity." Environmental Research

Memory hook

BIO (Life) + MASS (Massive weight) = Weight of plant and biological matter burned for power. Plant waste turned into energy.

When not to use

Do not confuse with fossilized organic matter like coal or oil, which took millions of years to transform.

Fun facts

  • Biomass was humanity's very first energy source, dating back to when early humans first controlled fire using wood.
LangBlitz
Take your vocabulary further with LangBlitz

Our English vocabulary app: FSRS spaced repetition, 5,000+ curated words across 119 topic groups, CEFR A1 to C2. Explore your mastery with the beautiful Vocabulary World feature.