From Longman Dictionary of Contemporary Englishmeridianme‧rid‧i‧an /məˈrɪdiən/ noun 1 [countable]SG one of the imaginary lines from the North Pole to the South Pole, drawn on a map of the Earth2 → the meridian
Examples from the Corpus
meridian• Even if you are sceptical about meridians, there's no denying that the roller gives an enjoyable massage.• Seventh, there may be blocks to the flow of electrical energy in the acupuncture meridians.• By the late 1870s, the hundredth meridian had been fatefully crossed.• The measurement of longitude meridians, in comparison, is tempered by time.• Ptolemy was free, however, to lay his prime meridian, the zero-degree longitude line, wherever he liked.• The placement of the prime meridian is a purely political decision.• The flows of life energy in the body along the meridians are thus adjusted and balanced at certain very carefully chosen spots.• She marked the meridians, numbered the latitudes and longitudes, and added a curlicue of compass points to make it navigable.Origin meridian (1300-1400) Old French Latin meridianus “of the middle of the day”, from medius “middle” + dies “day” 