of or relating to the number 60.
composed of or proceeding by sixties.

noun, plural sex·ag·e·nar·ies.

Origin of sexagenary

1525–35; < Latin sexāgēnārius, equivalent to sexāgēn(ī), distributive of sexāgintā sixty + -ārius -ary Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sexagenary

Historical Examples of sexagenary