quintuplication
/kwɪnˌtjuːplɪˈkeɪʃn/ /kwɪnˌtʃuːplɪˈkeɪʃn/noun
The action or process of making quintuple or of multiplying by five.
Origin
Late 17th century; earliest use found in Samuel Jeake. From quintuplicate + -ion, after duplication, quadruplication, multiplication, etc.