Sex-ăg'e-na-ry or Sēx'ă-gē-na-ry1, a.
a. [Lat. sexagenarius, from sexageni, sixty each, from sexaginta, sixty; Fr. sexagénaire, Sp. sexagenario, It. sexagenario.] Pertaining to, or designating, the number sixty; proceeding by sixties.
Sexagenary, or sexagesimal, scale (Math.), a scale of numbers in which the modulus is sixty, used in treating of the divisions of the circle.