Quadruple \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 alliance. [1913 Webster]

Quadruple time (Mus.), that in which each measure is divided into four equal parts. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

quadruple time

Source: WordNet (r) 2.0
 

Quadruple \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 alliance.

Quadruple time (Mus.), that in which each measure is divided into four equal parts.

Source: Webster's Revised Unabridged Dictionary (1913)