Economic Definition of time period. Defined.
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Term time period Definition: One of three elasticity determinants (budget proportion and substitute availability are the other two) stating that the elasticity of a good tends to be greater for a longer time period of analysis. In other words, the price elasticity of demand for gasoline is greater when the time period is one year than when it is one month. This elasticity determinant works for both the price elasticity of demand and the price elasticity of supply. In both cases, longer time periods allow consumers and produces more time to adjust to any price changes.