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Bismarck Sea
bismillah
bismuth
bison
bisque (1)
bisque (2)
bisque (3)
Bissau
bissextile
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bissextile

bis·sex·tile [ bī sékstil, bī sék stl, bi sék stl ]


adjective 
Definition:
 
making leap year: having the extra day in a year that makes it a leap year
bissextile month



noun  (plural bis·sex·tiles)
Definition:
 

Same as  leap year


[Late 16th century. < late Latin bis(s)extilus< Latin bi(s)sextus (dies) "twice-sixth (day)," February 24, the sixth day before March 1, counted twice in a leap year in the ancient Roman calendar]
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