Webster's Revised Unabridged Dictionary · 1913

Sexagesimal

Sexagesimal , adjective

[Compare French sexagésimal.]

Pertaining to, or founded on, the number sixty.
Collocations (3)
Sexagesimal fractions or Sexagesimal numbers (Arithmetic & Algebra) , those fractions whose denominators are some power of sixty; as, f, f, f; -- called also astronomical fractions, because formerly there were no others used in astronomical calculations.
Sexagesimal arithmetic or Sexagenary arithmetic , the method of computing by the sexagenary scale, or by sixties.
Sexagesimal scale (Mathematics) , the sexagenary scale.

Sexagesimal , noun

A sexagesimal fraction.