quadruplicate qua‧dru‧pli‧cate [kwɒˈdruːplkt ǁ kwɑː-] noun
in quadruplicate with four copies:
• Please print out the contract in quadruplicate.
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quadruplicate UK US /kwɒdˈruːplɪkət/ noun [U] FORMAL
Financial and business terms. 2012.