bissextile
📖 Definitions
adjective
Relating to the leap year or the extra day in a leap year.
noun
Leap year.
💬 Usage Examples
“You do know that 2012 will be a bissextile year, don’t you?” Jack Dillard; Chocolate Milk for You, Water for Your Tree; The Times (Shreveport, Louisiana); Dec 11, 2011.