sextuplex

[ seks-too-pleks, -tyoo-, seks-too-pleks, -tyoo-, -tuhp-leks ]
/ ˈsɛks tʊˌplɛks, -tyʊ-, sɛksˈtu plɛks, -ˈtyu-, -ˈtʌp lɛks /

adjective

sixfold; sextuple.

Origin of sextuplex

First recorded in 1850–55; sextu(ple) + -plex