**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.

© Webster 1913.

**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.

© Webster 1913.

**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.*

© Webster 1913.

**Quad"ru*ple**, v. i.

To be multiplied by four; to increase fourfold; to become four times as much.

© Webster 1913.