Dictionary.com

bissextus

[ bahy-seks-tuhs, bih- ]
/ baɪˈsɛks təs, bɪ- /
Save This Word!

noun
February 29th: the extra day added to the Julian calendar every fourth year (except those evenly divisible by 400, a rule introduced by the Gregorian calendar) to compensate for the approximately six hours a year by which the common year of 365 days falls short of the solar year.
QUIZ
ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes “sky blue”?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of bissextus

<Late Latin bissextus (diēs) intercalary (day); see bis1, sext1; so called because the 6th day before the Calends of March (Feb. 24th) appeared twice every leap year
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
FEEDBACK