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sextuplex

[seks-too-pleks, -tyoo-, seks-too-pleks, -tyoo-, -tuhp-leks]
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adjective
  1. sixfold; sextuple.

Origin of sextuplex

First recorded in 1850–55; sextu(ple) + -plex
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018