- nutrient-rich organic materials obtained from wastewater treatment and used beneficially, as for fertilizer: The application of biosolids to land improves soil properties and plant productivity, and reduces dependence on inorganic fertilizers.
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- semisolid or solid organic material obtained from the recycling of sewage, used esp as a fertilizer
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- Solid or semisolid organic material obtained from treated wastewater, often used as a fertilizer or soil amendment.
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