From Longman Dictionary of Contemporary Englishoperational researchˌoperational reˈsearch, operations research noun [uncountable] BTthe study of the best ways to build and use machines or plan organizations
Examples from the Corpus
operational research• Graduates often enter other professions such as those of the actuary, accountant, and operational research scientist.• In 1941 Williams became director of operational research at Coastal Command.• It has, today, been adapted to measure the effectiveness of operational research. 