any of a number of indexes published by the Dow Jones Co., based on prices on the New York Stock Exchange. nounany of a number of indexes published by the Dow Jones Co., based on prices on the New York Stock Exchange.COMMENTThe main index is the Dow Jones Industrial Average (see below). Other Dow Jones indexes are the Dow Jones 20 Transportation Average; Dow Jones 15 Utility Average; Dow Jones 65 Composite Average (formed of the Industrial average the Transportation Average and the Utility Average taken together and averaged); also the Dow Jones Global-US Index is a capitalisation weighted index based on 30 June 1982 = 100. A new European-based index is the Dow Jones Euro Stoxx 50 Index, comprising fifty blue-chip companies from various European countries.