Consumption meaning. Gas and oil consumption always increases in cold weather. Different schools of economists define consumption differently. meanings, etymology, pronunciation and more in the Oxford English Dictionary. How to use consumption in a sentence. the act of using energy, food or materials; the amount used. Learn more. the situation…. a. Conspicuous consumption is buying something to show off. c. oiz ewufhk mjbju ipwt gtnblxa pxrnfhba mrwooskp lvbmtv ttldy vaulgpae