/sep"too peuhl, -tyoo-, sep tooh"peuhl, -tyooh"-, -tup"euhl/ , adj., v., septupled, septupling .
adj.
1. sevenfold; consisting of seven parts.
v.t.
2. to make seven times as great.
[ 1605-15; septuplus, deriv. of L septem SEVEN, on the model of duplus DUPLE, quadruplus QUADRUPLE ]