noun B2 Latin origin meridian /ˈmɛrɪdiən/  ·  MER-i-di-an مرکزِ طولطول کا خطمرکزی طول خط Roman Urdu: Madhya ki rekha ENGLISH MEANING An imaginary north‑south line on the Earth's surface connecting the poles. A meridian is a line of longitude that runs from the North Pole to the South Pole. It is used in geography and[...]