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.

Photostat Xerox biquadrate biquadratic clone copy counterpart ditto double dupe duplicate duplication facsimile fourfold hectograph make four manifold microcopy microfilm mimeo mimeograph model multigraph multiply by four quadrable quadrigeminal quadruple quadruplex reduplicate repetition replica replicate replication representation reproduce reproduction stat tetraploid trace transcribe triplicate