seventeenth /ˌsɛvənˈtiːnθ/noun 2adjective 1forms 1 noun2 •One of seventeen equal parts of a whole.A seventeeth of 340 is 20. •An interval of two octaves and a third. adjective1 •The ordinal form of the number seventeen.Mr. Edward Glasser maintains that this people existed from about the seventeenth century B.C., and that the Sabaeans followed them in the occupancy of those regions. — 1913 formsseventeenths
