1. (v. t.) To make fourfold; to double twice; to quadruple.

2. (a.) Fourfold; doubled twice; four times repeated; as, a quadruplicate ratio, or a quadruplicate proportion.

3. (a.) Raised to the fourth power.

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