Sextuple Sex"tu*ple, a. [Formed (in imitation of quadruple) fr. L. sextus sixth: cf. F. sextuple.] 1. Six times as much; sixfold. 2. (Mus.) Divisible by six; having six beats; as, sixtuple measure., Subsextuple Sub*sex"tu*ple, a. Having the ratio of one to six; as, a subsextuple proportion. --Bp. Wilkins.