biosolids

plural noun

1. 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.

pl n

1. semisolid or solid organic material obtained from the recycling of sewage, used esp as a fertilizer

1. Solid or semisolid organic material obtained from treated wastewater, often used as a fertilizer or soil amendment.