| biomass | 1. <plant biology> Plant material that can be converted into fuel. 2. <ecology> A quantitative estimate of the entire amount of living organisms in a particular habitat, it can be measured in terms of volume, mass, or caloric energy. (21 Mar 1998) |
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| biomass energy | See Bioenergy. (05 Dec 1998) |
| biomass fuel | Liquid, solid, or gaseous fuel produced by conversion of biomass. (05 Dec 1998) |
| active biomass | <cell biology> The amount of a given culture that is actively growing. (06 May 1997) |
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