1. Roman law & civil law. A defendant’s pleading, following the triplicatio and similar to the rebutter at common law; the third defensive pleading. — Also termed quadruplication; (in old Scots law) quadruply.
2. Roman law. A plaintiff’s pleading, following the triplicatio, the replicatio, and the exceptio. Pl. quadruplicationes (kwah-dr[schwa]-pli-kay-shee-oh-neez).