Dictionary entry

Quadruple (3)

Webster's Dictionary 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.