marketplacen.1. an area in a town where a public market is set up; a market place; a market{2}.()2. The commercial activity whereby good and services are exchanged; as, without competition there would be no market.()3. The mechanism by which one finds a person to whom to sell or from whom to buy goods; the opportunity to buy and sell; a market{3}; as, to put one's goods on the market.()