adj. & n.
--adj.
1. of sixtieths.
2 of sixty.
3 reckoning or reckoned by sixtieths.
--n. (in full sexagesimal fraction) a fraction with a denominator equal to a power of 60 as in the divisions of the degree and hour.
Derivatives:
sexagesimally adv.
Etymology: L sexagesimus (as SEXAGESIMA)