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.

Quad*ru"pli*cate (?), a. [L. quadruplicatus, p. p.]

1. Fourfold; doubled twice; four times repeated; as, a quadruplicate ratio, or a quadruplicate proportion.

2. (Math.) Raised to the fourth power. [R.]

• having four parts
       
• 1903: H.G. Wells, Mankind in the Making - The small schools might specialize upon the type locally most desirable, the larger might group its triplicate (or quadruplicate) system of sustained and serious courses about a common Library...
  
• four times over, multiplied by four
       
• 1891: Rudyard Kipling, American Notes - ... Fortune, who delights in making the miner or the lumber-man a quadruplicate millionaire and in "busting" the railroad king.
  
• in quadruplicate: four times over, in four copies
       
• c.1886: Rudyard Kipling, "The Lovers' Litany" - Four times Cupid's debtor I-- / Bankrupt in quadruplicate.