Pronunciation: /bɪˈsɛkstaɪl/
noun a leap year
A1 A bissextile year has an extra day in February.
A2 In a bissextile year, February has 29 days instead of 28.
B1 People born on February 29 celebrate their birthdays only in bissextile years.
B2 The concept of a bissextile year was introduced by Julius Caesar in 45 BC.
C1 The rules for determining a bissextile year have been refined over centuries.
C2 Astronomers and mathematicians study the patterns of bissextile years in depth.
adjective relating to a leap year, especially one with 366 days
A1 A bissextile year has an extra day in February.
A2 In a bissextile year, February has 29 days instead of 28.
B1 Leap years are also known as bissextile years due to the extra day in February.
B2 The concept of a bissextile year was introduced by Julius Caesar in the Julian calendar reform.
C1 Astronomers use complex calculations to determine when a year should be bissextile in order to keep the calendar in sync with the solar year.
C2 The rules for determining a bissextile year are based on the Earth's orbit around the Sun and the length of a tropical year.
formal The year 2020 was a bissextile year, also known as a leap year.
informal Hey, did you know 2020 is a bissextile year? That means we get an extra day in February!
slang 2026 is gonna be a bissextile year, so we get an extra day to party!
figurative Just like a bissextile year, sometimes we need an extra day to catch up on things in life.
bissextiled
bissextiles
more bissextile
most bissextile
bissextiles
will bissextile
has bissextiled
is bissextiling
bissextile
bissextile
to bissextile
bissextiling
bissextiled