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consumption (n.)

late 14c., "wasting of the body by disease; wasting disease, progressive emaciation" (replacing Old English yfeladl "the evil disease"), from Old French consumpcion, from Latin consumptionem (nominative consumptio) "a using up, wasting," noun of state from past-participle stem of consumere "to use up, eat, waste," from assimilated form of com-, here perhaps an intensive prefix (see com-), + sumere "to take," from sub- "under" (see sub-) + emere "to buy, take" (from PIE root *em- "to take, distribute"). Meaning "act of consuming, the using up of material, destruction by use" is 1530s.

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Definitions of consumption from WordNet

consumption (n.)
the process of taking food into the body through the mouth (as by eating);
Synonyms: ingestion / intake / uptake
consumption (n.)
involving the lungs with progressive wasting of the body;
Synonyms: pulmonary tuberculosis / phthisis / wasting disease / white plague
consumption (n.)
(economics) the utilization of economic goods to satisfy needs or in manufacturing;
the consumption of energy has increased steadily
Synonyms: economic consumption / usance / use / use of goods and services
consumption (n.)
the act of consuming something;
Synonyms: using up / expenditure
From wordnet.princeton.edu