quadruplicate /ˌkwɑˈdɹuːplɪkət/adjective 2noun 2verb 1forms 3 adjective2 •having four partsThe small schools might specialize upon the type locally most desirable, the larger might group its triplicate (or quadruplicate) system of sustained and serious courses about a common Library […] — 1903 •four times over, multiplied by four[…] Fortune, who delights in making the miner or the lumber-man a quadruplicate millionaire and in "busting" the railroad king. — 1891 noun2 •One of four copies of something. •In quadruplicate: four times over, in four copies.Four times Cupid's debtor I-- / Bankrupt in quadruplicate. — 1886 verb1 •To replicate four times; to make fourfold; to quadruple. formsquadruplicated · quadruplicating · quadruplicates