Word: 闰年 (rùnnián) Traditional: 閏年 闰年 dictionary entry rùnnián leap year; year with a thirteen intercalary month Full dictionary entry for 闰年 Example sentences using 闰年 2 sentences, showing page 1 of 1. 二月在闰年有二十九天。 Èryuè zài rùnnián yǒu èrshí jiǔtiān. February has twenty-nine days in a leap year. 你知道明年是不是闰年吗？ Nǐ zhīdào míngnián shìbúshì rùnnián ma? Do you know whether next year is a leap year?