shirabe.org
1)

閏うるう

#88,048
うるう
Meaning
    1. ①
      embolism; intercalation
    1. ①
      EN Intercalation or embolism in timekeeping is the insertion of a leap day, week, or month into some calendar years to make the calendar follow the seasons or m...
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Kanji
閏 ジュン intercalation, illegitimate throne
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6)

閏年うるうどし

#133,663
Common
うるうどし
Meaning
    1. ①
      leap year
    1. ①
      EN A leap year (also known as an intercalary year or a bissextile year) is a year containing one additional day (or, in the case of lunisolar calendars, a month...
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Kanji
閏 ジュン intercalation, illegitimate throne 年 ネン year, counter for years
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12)

閏秒うるうびょう

#273,805
うるうびょう
Meaning
    1. ①
      leap second
    1. ①
      EN A leap second is a one-second adjustment that is occasionally applied to Coordinated Universal Time (UTC) in order to keep its time of day close to the mean ...
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Kanji
閏 ジュン intercalation, illegitimate throne 秒 ビョウ second (1/60 minute)
Forms
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