The Collaborative International Dictionary of English v.0.48:
Octuple \Oc"tu*ple\, a. [L. octuplus; cf. Gr. ?: cf. F. octuple.] Eightfold. [1913 Webster]WordNet (r) 3.0 (2006):
octuple adj 1: having eight units or components [syn: octuple, eightfold, eight-fold]