Sex·a·ges·i·mal a. Pertaining to, or founded on, the number sixty.
Sexagesimal fractions or Sexagesimal numbers Arith. & Alg., those fractions whose denominators are some power of sixty; as,
Sexagesimal arithmetic, or Sexagenary arithmetic, the method of computing by the sexagenary scale, or by sixties.
Sexagesimal scale Math., the sexagenary scale.