bissextile

[ bahy-seks-til, -tahyl, bi- ]
/ baɪˈsɛks tɪl, -taɪl, bɪ- /
|

adjective

containing or noting the extra day of leap year: The years 1980 and 1984 were both bissextile.

noun

Origin of bissextile

1585–95; < Late Latin bi(s)sextilis (annus) leap year, equivalent to bissext(us) bissextus + -ilis -ile
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for bissextile

British Dictionary definitions for bissextile

bissextile

/ (bɪˈsɛkstaɪl) /

adjective

(of a month or year) containing the extra day of a leap year

noun

a rare name for leap year

Word Origin for bissextile

C16: from Late Latin bissextilis annus leap year, from Latin bissextus, from bi- 1 + sextus sixth; referring to February 24, the 6th day before the Calends of March
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012