› [U] TRANSPORT a type of air travel that is more expensive and has better conditions than economy class, or the part of a plane where people who have booked this type of travel sit: Most of the special deals on flights are for business class only. Complimentary drinks will be served to passengers in business class. business-class passengers/seats/tickets → Compare economy class, first class adjective › [C] a set of classes or a course of study in which the principles or methods of business are taught: He got a promotion after taking business classes in the evening. › [C or U] MANAGEMENT the group of people within society who own or have important positions in companies: During the election campaign, the Republican Party lost support among the business class.