CIDE DICTIONARY
sexagesimal, a. [Cf. F. sexagésimal.].
Pertaining to, or founded on, the number sixty. [1913 Webster]
Sexagesimal fractions or Sexagesimal 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 arithmetic, or Sexagenary arithmetic, the method of computing by the sexagenary scale, or by sixties. --
Sexagesimal scale (Math.), the sexagenary scale.
ROGET THESAURUS
sexagesimal
Quinquesection
N
quinquesection, &c, division by five, quinquesection, decimation, fifth, quinquefid, quinquelateral, quinquepartite, quinqevalent, pentavalent, quinquarticular, octifid, decimal, tenth, tithe, duodecimal, twelfth,
sexagesimal, sexagenary, hundredth, centesimal, millesimal.