sexenary

[sek-suh-ner-ee]

adjective

senary.
sextuple(def 1).
(of a numerical system) with a base of six.

Origin of sexenary

1805–15; irregular < Latin sex six + -enary, as in septenary

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018