Elasticity may refer to: Elasticity (physics), continuum mechanics of bodies which deform reversibly under stress Various uses are derived from this physical sense of the term, especially in economics: Elasticity (economics), a general term for a ratio of change. For more specific economic forms of elasticity, see:Price elasticity of demandPrice elasticity of supplyIncome elasticity of demandCross elasticity of demandOutput elasticityElasticity of substitutionFrisch elasticity of labor supplyBe… (More on Elasticity)