adjective🔗ShareOf or relating to the Sun, especially rising and setting with the sun."The ancient Egyptians based their calendar on the heliacal rising of the star Sirius, which coincided with the annual flooding of the Nile. "astronomyastrologytimeweatherChat with AIVocabulary GamePractice Reading
adjective🔗ShareOf or relating to the rising of a star when it first becomes visible just before sunrise in the eastern sky, having previously been made invisible by sunlight, or the analogous situation of its setting just after sunset."The farmer knew it was time to plant when he observed the heliacal rising of the star Sirius. "astronomyastrologytimespacenaturephenomenaChat with AIVocabulary GamePractice Reading
