(Christianity) In the Christian calendar the Sunday two weeks before Lent, eight before Easter Sunday.

In the Catholic liturgical year, the eighth Sunday (i.e. the sixtieth—minus one—day) before Easter (and the second before Lent).

plural of Sexagesima Sunday

(mathematics) Of, related to, or based on the number sixty.

(mathematics) A fraction involving division by 60; a sixtieth part of something. / (mathematics) A base-60 number.

plural of sexagesimal

In the sexagesimal system.