Sexagesima is the second Sunday before Ash Wednesday.
(noun)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.
See Sexagesima in Webster's New World College Dictionary
noun
Origin: ME sexagesime < LL(Ec) sexagesima (dies) < fem. of L sexagesimus, sixtieth (+ dies, day)
See Sexagesima in American Heritage Dictionary 4
noun
Origin:
Origin: Late Latin sexāgēsima (diēs), sixtieth (day)
Origin: , from feminine of Latin sexāgēsimus, sixtieth
Origin: , from sexāgintā, sixty; see sexagenary
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