Quadruplicate

Quad‐ru″pli‐cate (?), v. t. [imp. & p. p.Quadruplicated (?); p. pr. & vb. n.Quadruplicating.] [L. quadruplicatus, p. p. of quadruplicare, fr. quadruple� fourfold. See Quadruplex.] To make fourfold; to double twice; to quadruple.