1. A tank or container in which organic waste is broken down by bacteria in the absence of oxygen to produce biogas and fertilizer.
Usage: technical; environmental science

Examples

• The farm installed a biodigester to convert animal manure into renewable energy.
• Biodigesters are increasingly used in developing countries to provide cooking fuel and reduce waste.
• The biodigester processes food scraps and produces methane gas for heating.
• Many municipalities are exploring biodigesters as a sustainable waste management solution.
• The biodigester output can be used as nutrient-rich fertilizer for crops.