Quad"ru*ple, n. [Cf. F.
quadruple, L. quadruplum.] four times the sum or
number; a fourfold amount; as, to receive to quadruple of the
amount in damages.
Quad"ru*ple, v. t. [imp. & p.
p. Quadrupled (?); p. pr. & vb. n.
Quadrupling (?).] [L. quadruplare: cf. F.
quadrupler.] To multiply by four; to increase fourfold; to
double; to double twice. A. Smith.
Quad"ru*ple, v. i. To be multiplied
by four; to increase fourfold; to become four times as much.
Quad"ru*ple (?), a. [L.
quadruplus, from quattuor four: cf. F.
quadruple. See Quadrate, and cf. Double.]
Fourfold; as, to make quadruple restitution; a
Quadruple time (Mus.), that in which
each measure is divided into four equal parts.