meridian
noun /məˈrɪdiən/
/məˈrɪdiən/
- one of the lines that is drawn from the North Pole to the South Pole on a map of the worldTopics Geographyc2Word Originlate Middle English: from Old French meridien, from Latin meridianum (neuter, used as a noun) ‘noon’, from medius ‘middle’ + dies ‘day’.