- 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.
Origin: Middle English sexagesime from Ecclesiastical Late Latin sexagesima (dies) from feminine of Classical Latin sexagesimus, sixtieth (+ dies, day)
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Origin: Late Latin sexāgēsima (diēs), sixtieth (day), from feminine of Latin sexāgēsimus, sixtieth, from sexāgintā, sixty; see sexagenary.