1. relating to or resembling the moon
2. measured by the moon’s phases or orbit

Examples

• The lunar surface is covered with craters.
• Scientists studied the lunar rocks brought back by astronauts.
• A lunar eclipse occurs when Earth blocks sunlight from reaching the moon.
• The lunar calendar is based on the phases of the moon.
• The lunar module landed safely on the moon’s surface.
• Tides are influenced by lunar gravitational pull.
• The lunar cycle lasts about 29.5 days.