Longman Dictionary of Contemporary English homepage

Date: 1300-1400
Language: Old French
Origin: Latin meridianus 'of the middle of the day', from medius 'middle' + dies 'day'

meridian

noun
     
Related topics: Geography
me‧rid‧i‧an
1 [countable]SG one of the imaginary lines from the North Pole to the South Pole, drawn on a map of the Earth
2

the meridian

technicalSGHA the highest point reached by the sun or another star, when seen from a point on the Earth's surface

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