bissextile day

noun bis·sex·tile day \ (ˈ)bī , bə̇ + \

Definition of bissextile day

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Origin and Etymology of bissextile day

Medieval Latin bissextilis, bisextilis of a bissextus, from Late Latin bissextus, bisextus, an intercalary day in the Julian calendar, from bi- 1bi or bis- + sextus sixth; from its following February 24, the 6th day before the calends of March


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