antitrust legislation

Từ điển Oxford Advanced Learner 8th

antitrust legislation [antitrust legislation] BrE NAmE noun [U]
laws introduced in the US to encourage competition in business. Their main aim has been to prevent or control monopolies (= companies which are so large that no others can compete with them). The most important early antitrust laws passed by the United States Congress were the Sherman Antitrust Act (1890) and the Clayton Antitrust Act (1914).
See also ↑Taft-Hartley Act