Quadruplicate :: Quadruplicate (v. t.) To make fourfold; to double twice; to quadruple.
Quadruplicate :: Quadruplicate (a.) Fourfold; doubled twice; four times repeated; as, a quadruplicate ratio, or a quadruplicate proportion..
Quadruplication :: Quadruplication (n.) The act of making fourfold; a taking four times the simple sum or amount.