antitrust law
noun [ C or U ]
ukus LAW
a law that prevents companies from working together to control prices unfairly or to create a monopoly (= a single company or small group of companies that is the only supplier of something), or the area of law that deals with these things:
Competitors who collude to fix prices would be breaking antitrust laws.
The legal problems under antitrust law start when one company, or cooperative, conspires with another to move the market.
Federal antitrust law prevents competitors in any field from setting prices
See also
competition law