Share this entry

Share this page

lunar day

Syllabification: lu·nar day

Definition of lunar day in English:

noun

1The interval of time between two successive crossings of the earth’s meridian by the moon (roughly 24 hours and 50 minutes).
Example sentences
  • Thus their ‘day’ would not be based on the movement of the Sun, a 24-hour cycle, but rather a lunar day, lasting 24 hours and 50 minutes.
  • The length of the lunar day is thus identical to the length of its revolution around Earth.
  • Based on lunar day of 24 hrs 50 minutes, will provide accurate indication of tide cycle.
2 rare The interval of time between two successive sunrises as seen from the moon.
Example sentences
  • It was designed to operate for three lunar days, but the scientific team succeeded in keeping it operating for eleven lunar days - the equivalent of 10 months.
  • Over the month-long lunar day, we'd see the Earth turn in place every 24 hours.

Definition of lunar day in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Top searches

= trending
Word of the day vicarious
Pronunciation: vɪˈkɛːrɪəs
adjective
experienced in the imagination through another person's feelings…