Nounthe process of decomposing organic matter (as in sewage) by bacteria or by chemical action or heat(hypernym) chemical process, chemical change, chemical action(derivation) digestthe organic process by which food is converted into substances that can be absorbed into the body(hypernym) organic process, biological process(hyponym) gastric digestion(derivation) digestlearning and coming to understand ideas and information; "his appetite for facts was better than his digestion"(hypernym) learning, acquisition(derivation) digest