leap year

noun

1
: a year in the Gregorian calendar containing 366 days with February 29 as the extra day
2
: an intercalary year in any calendar

Examples of leap year in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
During leap years, the days of the week shift, but the distribution of days of the week remains the same. Manon Bischoff, Scientific American, 13 Mar. 2026 Wait a few million years, and the number of days in a year will change, removing the need for leap years altogether. Big Think, 31 Mar. 2026 Because 2024 was a leap year, Shirilla's petition was late by one day. Ingrid Vasquez, PEOPLE, 24 June 2026 The movement is programmed to account for varying month lengths and leap years for more than a century, while offering a 50-hour power reserve. Matthew Catellier, Forbes.com, 31 Mar. 2026 See All Example Sentences for leap year

Word History

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of leap year was in the 14th century

Cite this Entry

“Leap year.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/leap%20year. Accessed 7 Jul. 2026.

Kids Definition

leap year

noun
: a year in the Gregorian calendar containing 366 days with February 29 as the extra day

More from Merriam-Webster on leap year

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!