Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “biomass”


noun [U]     /ˈbaɪ.əʊˌmæs/ US  /-oʊ-/ specialized
engineering dead plant and animal material suitable for using as fuel : biomass fuel / energy FuelsPetroleum products especially when used as fuel biology the total mass of living things in a particular area Animal groupings
(Definition of biomass noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of biomass

Browse related topics

You are looking at an entry to do with Fuels, but you might be interested in these topics from the Energy & fuels topic area:

Definitions of “biomass” in other dictionaries

Word of the Day

prenuptial agreement

an official document signed by two people before they get married that says what will happen to their possessions and/or children if they divorce (= officially stop being married)

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More