Inelastic An economic term used to describe the situation in which the supply and demand for a good are unaffected when the price of that good or service changes. Investopedia Says: When a price change has no effect on the supply and demand of a good or service, it is considered perfectly inelastic. An example of perfectly inelastic demand would be a life saving drug that people will pay any price to obtain. Even if the price of the drug were to increase dramatically, the quantity demanded would remain the same. Related Terms: Defensive Company Demand Economics Elastic Elasticity Equilibrium Income Elasticity Of Demand Price Elasticity of Demand Supply Total Revenue Test |