equilibrium The point at which the demand and supply sides of a market are simultaneously at the same price and quantity. The point at which quantity supplied crosses quantity demanded.Related Articles: Glossary: price ceilingThe Downside of Gift GivingWhere An Online Collectible is Worth $69 MillionIs the Market Ethical?A Demand and Supply Lesson Ann Mills Share This Previous Articleeconomic growth Next Articlehorizontal integration December 17, 2020