[ad. L. quadruplicātiōn-em, n. of action from quadruplicāre to make fourfold: see prec.]
1. The action or process of making fourfold, of multiplying by four; also, the result of this; a thing folded four times.
1578. Banister, Hist. Man, V. 78. It [the vein] is admitted into the quadruplication of Dura mater.
1611. Cotgr., Quadruplication, a quadruplication.
1616. in Bullokar, Eng. Expos. [Hence in Cockeram, Blount, etc.]
1674. Jeake, Arith. (1696), 24. Quadruplication … is to double the Duplication.
1839. Alison, Europe (1849–50), VII. xli. § 15. 19. Twenty-eight years; the well-known period of the quadruplication of the Sum at compound interest of five per cent.
2. Civil and Canon Law. A pleading on the part of the defendant, corresponding to the rebutter at common law. Cf. QUADRUPLY sb.
1651. W. G., trans. Cowel’s Inst., 243. After a Triplication [follows] a Quadruplication.
1726. Ayliffe, Parergon, 251. Quad[r]uplications, which the Defendant propounds to the Plaintiff’s Triplications.
