sexagesimal

& 8. [SEX AGE SIMA.] A. As adj .: Sixtieth; pertaining to the number sixty; proceeding by sixties. B. As substantive : Mathemat.: The same as SEXAGESIMAL-FRACTION (q. v.). sexagesimal-arithmetic, s. Sexagenary arithmetic (q. v.). sexagesimal-fraction, subst . Fractions whose denominators are some power of sixty, as, 16. Such fractions were alone used in astronomical calculations, and so were formerly also called astronomical fractions. They are still retained in the division of the circle and of time, each degree or hour being divided into sixty minutes, and each minute into sixty seconds, and so on. sex-an-a-ry, adj. [Lat. sex six. Perhaps a mistake for sexenary.] Consisting of six or sixes; sixfold.