SEXAGENARY a. 3 definitions
Pertaining to, or designating, the number sixty; poceeding by sixties; sixty years old. Sexagenary arithmetic. See under Sexagesimal. -- Sexagenary, or Sexagesimal, scale (Math.), a scale of numbers in which the modulus is sixty. It is used in treating the divisions of the circle.
SEXAGESIMAL a. 2 definitions
Pertaining to, or founded on, the number sixty. Sexagesimal fractions or numbers (Arith. & Alg.), those fractions whose denominators are some power of sixty; as, astronomical fractions, because formerly there were no others used in astronomical calculations. -- Sexagesimal, or Sexagenary, arithmetic, the method of com…