noun
: the mean time of the moon's revolution in its orbit from ascending node to ascending node equal to 27 days, 5 hours, 5 minutes, 35.8 seconds of mean solar time — called also draconic period
noun
: the mean time of the moon's revolution in its orbit from ascending node to ascending node equal to 27 days, 5 hours, 5 minutes, 35.8 seconds of mean solar time — called also draconic period
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012