quintupleverb [ I or T ]
uk/kwɪnˈtʃuː.pl//kwɪnˈtuː.pl/to increase by five times, or to increase something by five times:
Since 2010, the company's revenue has quintupled.
They militarized the country by quintupling the size of its armed forces.
quintupleadjective
uk/kwɪnˈtʃuː.pl//kwɪnˈtuː.pl/affecting or involving five different things or parts of something:
He had a quintuple heart bypass operation.
a quintuple murder case