bissextile day

noun

bis·sex·tile day

(ˈ)bī,

bə̇ +

: leap day

Word History

Etymology

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

Cite this Entry

Style

“Bissextile day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bissextile%20day. Accessed 22 Nov. 2024.

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