Economic Definition of C. Defined.
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Term C Definition: The standard abbreviation for consumption expenditures by the household sector, especially when used in the study of macroeconomics. This abbreviation is most often seen in the consumption function, specified as C = a + bY, where Y stands for national income. It is also used for the aggregate expenditure equation, AE = C + I + G + (X - M), where I, G, and (X - M) represent expenditures by the other three macroeconomic sectors, business, government, and foreign.