- Sexagesima is the second Sunday before Ash Wednesday.
An example of Sexagesima is the day two Sundays before the first day of Lent in the Christian religion that marks the start of the pre-Lenten season.
Sexagesima definition by Webster's New World
Origin: Middle English sexagesime ; from Ecclesiastical Late Latin sexagesima (dies) ; from feminine of Classical Latin sexagesimus, sixtieth (+ dies, day)
Sexagesima definition by American Heritage Dictionary
Origin: Late Latin sexāgēsima (diēs), sixtieth (day), from feminine of Latin sexāgēsimus, sixtieth, from sexāgintā, sixty; see sexagenary.