Definition of meridian
1 archaic : the hour of noon : midday
3 : a high point (as of development or prosperity) <the problem of the unmarried don after he had passed the meridian — H. J. Laski>
4a (1) : a great circle on the surface of the earth passing through the poles (2) : the half of such a circle included between the polesb : a representation of such a circle or half circle numbered for longitude (see longitude 1) on a map or globe — see longitude illustration
5 : any of the pathways along which the body's vital energy flows according to the theory behind acupuncture
Examples of meridian in a sentence
<a lawyer at the meridian of his career arguing a case before the U.S. Supreme Court>
Definition of Meridian
1 city in southwestern Idaho west of Boise population 75,092 ◆Between 2000 and 2010, Meridian more than doubled in population.
2 city in east central Mississippi population 41,148 ◆In 1863, during the American Civil War, Meridian served as temporary state capital for a brief time.
MERIDIAN Defined for English Language Learners
Definition of meridian for English Language Learners
: any one of the lines that go from the North Pole to the South Pole on maps of the world
MERIDIAN Defined for Kids
Definition of meridian for Students
1 : any imaginary semicircle on the earth's surface reaching from the north pole to the south pole
2 : a representation of a meridian on a map or globe numbered according to degrees of longitude
Medical Definition of meridian
1: an imaginary circle or closed curve on the surface of a sphere or globe-shaped body (as the eyeball) that lies in a plane passing through the poles
2: any of the pathways along which the body's vital energy flows according to the theory of acupuncture
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