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Definition of Quadruple
1. Noun. A set of four similar things considered as a unit.
2. Verb. Increase fourfold. "Their earnings quadruple this year"; "His stock earning quadrupled"
3. Adjective. Having four units or components. "Quadruplex wire"
4. Noun. A quantity that is four times as great as another.
5. Adjective. Four times as great or many. "A fourfold increase in the dosage"
Definition of Quadruple
1. a. Fourfold; as, to make quadruple restitution; a quadruple alliance.
2. n. four times the sum or number; a fourfold amount; as, to receive to quadruple of the amount in damages.
3. v. t. To multiply by four; to increase fourfold; to double; to double twice.
4. v. i. To be multiplied by four; to increase fourfold; to become four times as much.
Definition of Quadruple
1. [v -PLED, -PLING, -PLES]