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1. Having four units or components
   "quadruplicate rhythm has four beats per measure";
   - quadruple, quadruplex, fourfold, four-fold

1. Any four copies; any of four things that correspond to one another exactly
   "it was signed in quadruplicate"

1. Reproduce fourfold
   "quadruplicate the bill"

Derived forms: quadruplicating, quadruplicates, quadruplicated

See also: multiple

Type of: copy, reproduce