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We found 22 dictionaries with English definitions that include the word bissextile: Click on the first link on a line below to go directly to a page where "bissextile" is defined. General (16 matching dictionaries) bissextile: American Heritage Dictionary of the English Language [home, info] bissextile: Collins English Dictionary [home, info] bissextile: Wordnik [home, info] bissextile: Wiktionary [home, info] bissextile: Webster's New World College Dictionary, 4th Ed. [home, info] bissextile: Infoplease Dictionary [home, info] Bissextile, bissextile: Dictionary.com [home, info] Bissextile: Wikipedia, the Free Encyclopedia [home, info] Bissextile: Online Plain Text English Dictionary [home, info] bissextile: Webster's Revised Unabridged, 1913 Edition [home, info] Bissextile: AllWords.com Multi-Lingual Dictionary [home, info] bissextile: Webster's 1828 Dictionary [home, info] Bissextile: Dictionary of Phrase and Fable (1898) [home, info] bissextile: Free Dictionary [home, info] bissextile: Dictionary/thesaurus [home, info] bissextile: Worthless Word For The Day [home, info] Business (2 matching dictionaries) BISSEXTILE: Bouvier's Law Dictionary 1856 Edition [home, info] Bissextile: Legal dictionary [home, info] Computing (1 matching dictionary) bissextile: Encyclopedia [home, info] Medicine (1 matching dictionary) bissextile: online medical dictionary [home, info] Miscellaneous (2 matching dictionaries) bissextile: A Word A Day [home, info] bissextile: Wordcraft Dictionary [home, info]

Quick definitions (bissextile) (a.) Pertaining to leap year. (n.) Leap year; every fourth year, in which a day is added to the month of February on account of the excess of the tropical year (365 d. 5 h. 48 m. 46 s.) above 365 days. But one day added every four years is equivalent to six hours each year, which is 11 m. 14 s. more than the excess of the real year. Hence, it is necessary to suppress the bissextile day at the end of every century which is not divisible by 400, while it is retained at the end of those which are divisible by 400. (This definition is from the 1913 Webster's Dictionary and may be outdated.)