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leap year Line breaks: leap year

Definition of leap year in English:


A year, occurring once every four years, which has 366 days including 29 February as an intercalary day.
Example sentences
  • To compensate for this discrepancy, the leap year is omitted three times every four hundred years.
  • On the advice of a Greek astronomer, Sosigenes, he then [thereafter] started the leap year system.
  • I know leap years are roughly every four years, but I think there are some that aren't like that.


Late Middle English: probably from the fact that feast days after February in such a year fell two days later than in the previous year, rather than one day later as in other years, and could be said to have ‘leaped’ a day.

Definition of leap year in:
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