**Sex`a*ges"i*mal** (?), a. [Cf. F. *sexag'esimal*.]

Pertaining to, or founded on, the number sixty.

Sexagesimal fractions ∨ numbers Arith. & Alg., those fractions whose denominators are some power of sixty; as, -- Sexagesimal, ∨ Sexagenary, arithmetic, the method of computing by the sexagenary scale, or by sixties. -- Sexagesimal scale Math., the sexagenary scale.

© Webster 1913.

**Sex`a*ges"i*mal**, n.

A sexagesimal fraction.

© Webster 1913.