A FREE English Dictionary Database from

You can check the meaning of one word, or a whole page.

Enter your query in the search box, or choose a letter from the menu below.

Try our SpellChecker here, or our English Thesaurus here.

 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
 Exact Word  Within Words  Within Descriptions
Bissextile (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.