celestial meridian

great circle passing through the celestial poles, the zenith, and the nadir of a particular location

en-US/səˈlɛst͡ʃəl məˈɹɪdiən/
en-GB/sɪˈlɛstɪəl məˈɹɪdɪən/

ক্যাটাগরি:

great circle