Biomass (noun)

1. The total mass of living organisms in a particular area or ecosystem.
2. Plant material, especially wood, used as a fuel.
3. The organic matter that can be used as fuel, especially plant material.

Origin:

Late 19th century; earliest use found in nature. from bio- + mass.

Examples:

1. The biomass of the forest includes all the trees, plants, and animals.
2. Biomass power plants burn wood chips to generate electricity.
3. The use of biomass as a source of energy is considered more sustainable than fossil fuels.
4. The biomass of the oceans includes fish, plankton, and other marine organisms.
5. The research team is developing a new method for converting biomass into biofuels.