INDIFFERENCE CURVE: A curve that graphically depicts various combinations of goods that generate the same level of utility to a consumer. In other words, a consumer is "indifferent" among any of the bundles because they all provide the same satisfaction. Indifference curves are combined with a budget line or constraint for indifference curve analysis used to explain many aspects of demand, including the slope of the demand curve and the income and substitution effects. See also | indifference map | utility | budget constraint |