sexagenary

(sĕk-săjˈə-nĕrˌē)

adjective
  1. Relating to or proceeding by sixties.
  2. Sexagenarian.
noun pl. sex·ag·e·nar·ies
A sexagenarian.

Origin:

Origin: Latin sexāgēnārius

Origin: , from sexāgēnī, sixty each

Origin: , from sexāgintā, sixty

Origin: : sex, six; see sex-

Origin: + -gintā, ten times; see dekm̥ in Indo-European roots

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