Sex′a‐ges″i‐mal (?), a. [Cf. F. sexagésimal.] Pertaining to, or founded on, the number sixty.
Sexagesimal fractionsornumbers(Arith. & Alg.), those fractions whose denominators are some power of sixty; as, ⅟₆₀, ⅟₃₆₀₀, ⅟₂₁₆₀₀₀; — called also astronomical fractions, because formerly there were no others used in astronomical calculations. — Sexagesimal, orSexagenary, arithmetic, the method of computing by the sexagenary scale, or by sixties. — Sexagesimal scale(Math.), the sexagenary scale.