antitrust definition
Antitrust Definition. Antitrust refers to government policy to regulate or break up monopolies in order to promote free competition and attain the benefits that such competition can provide to the economy and to society as a whole.ree competition is the situation in which multiple companies offer identical or similar products and compete solely on the basis of price and quality, including the quality of any services that are associated with the products (e.g., packaging, delivery and warranties).