Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun 366_days

1 sense of 366 days

Sense 1
leap year, intercalary year, 366 days, bissextile year -- (in the Gregorian calendar: any year divisible by 4 except centenary years divisible by 400)
       => year, twelvemonth, yr -- (a period of time containing 365 (or 366) days; "she is 4 years old"; "in the year 1920")