from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The total mass of living matter within a given unit of environmental area.
  • n. Plant material, vegetation, or agricultural waste used as a fuel or energy source.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The total mass of all living things within a specific area, habitat etc.
  • n. Vegetation used as a fuel, or source of energy, especially if cultivated for that purpose.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. plant materials and animal waste used as fuel
  • n. the total mass of living matter in a given unit area


bio- +‎ mass (Wiktionary)



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