meridian

noun me·rid·i·an \ mə-ˈri-dē-ən \

Definition of meridian

1 archaic :the hour of noon :midday
2 :a great circle of the celestial sphere passing through its poles and the zenith of a given place — see azimuth illustration
3 :a high point (as of development or prosperity)
  • the problem of the unmarried don after he had passed the meridian
  • —H. J. Laski
4 a (1) :a great circle on the surface of the earth passing through the poles
(2) :the half of such a circle included between the poles
b :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

meridian

adjective

Examples of meridian in a Sentence

  1. a lawyer at the meridian of his career arguing a case before the U.S. Supreme Court

Recent Examples of meridian from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'meridian.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of meridian

Middle English, from Anglo-French meridien, from meridien of noon, from Latin meridianus, from meridies noon, south, irregular from medius mid + dies day — more at mid, deity


Meridian

geographical name Me·rid·i·an \ mə-ˈri-dē-ən \

Definition of Meridian

1 city in southwestern Idaho west of Boise population 75,092
Note: Between 2000 and 2010, Meridian more than doubled in population.
2 city in east central Mississippi population 41,148
Note: In 1863, during the American Civil War, Meridian served as temporary state capital for a brief time.


MERIDIAN Defined for English Language Learners

meridian

noun

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

meridian

noun me·rid·i·an \ mə-ˈri-dē-ən \

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 Dictionary

meridian

noun me·rid·i·an \ mə-ˈrid-ē-ən \

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

meridian

adjective


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