bi·o·di·gest·er /ˌbaɪəʊdaɪˈdʒestə, -də- $ -oʊdaɪˈdʒestər, -də-/
noun [countable] a large container in which plant material or animal waste is changed by bacteria, producing
methane and
carbon dioxide [TahlilGaran] Dictionary of Contemporary English ▲