Part of speech: Noun
the process of decomposing organic matter (as in sewage) by bacteria or by chemical action or heat
Categories: Chemical process, Chemical change, Chemical action
Part of speech: Noun
the organic process by which food is converted into substances that can be absorbed into the body
Categories: Organic process, Biological process
Part of speech: Noun
learning and coming to understand ideas and information
Example: his appetite for facts was better than his digestion
Categories: Learning, Acquisition
The word "digestion" comes from Old French digestion.
French spelling conventions explain many of English's 'silent letters' and irregular spellings.