Hemisphere meaning

hĕm'ĭ-sfîr'
Hemisphere is defined as half of the world, globe or brain.

An example of hemisphere is the southern part of the world.

An example of hemisphere is the left side of the brain.

noun
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One half of a sphere, formed by a plane that passes through the center of the sphere.
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Either the northern or southern half of the earth as divided by the equator or the eastern or western half as divided by a meridian.
noun
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Half of a sphere, globe, or celestial body.
  • Any of the halves into which the celestial sphere is divided by either the celestial equator or the ecliptic.
  • Any of the halves of the earth: the earth is divided by the equator into the N and S hemispheres and by a meridian into the E Hemisphere (containing Europe, Asia, Africa, and Australia) and the W Hemisphere (containing the Americas and Oceania).
  • A model or map of any of these halves.
noun
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An area of action, knowledge, etc.
noun
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The countries and peoples of any of the earth's hemispheres.
noun
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Either half of the celestial sphere as divided by the ecliptic, the celestial equator, or the horizon.
noun
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Either lateral half of the cerebrum or cerebellum.
noun
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Either half of the celestial sphere as divided by the ecliptic, the celestial equator, or the horizon.
noun
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Either the northern or southern half of the earth as divided by the equator or the eastern or western half as divided by a meridian.
noun
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Either the northern or southern half of the Earth as divided by the equator, or the eastern or western half as divided by a meridian, especially the prime meridian.
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One half of the celestial sphere as divided by any of various great circles, especially the celestial equator and the ecliptic.
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(astronomy, astrology) Half of the celestial sphere, as divided by either the ecliptic or the celestial equator [from 14th c.].
noun
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(figuratively) A realm or domain of activity [1503].
noun
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(geography) Half of the Earth, such as the Northern Hemisphere, Southern Hemisphere, Western Hemisphere or Eastern Hemisphere, Land Hemisphere, Water Hemisphere etc. [1550s].
noun
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(geometry) Any half-sphere, formed by a plane intersecting the center of a sphere. [1580s].
noun
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(cartography) A map or projection of a celestial or terrestrial hemisphere [1706].
noun
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(anatomy) Either of the two halves of the cerebrum. [1804].
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Origin of hemisphere

  • From Latin hemisphaerium, from Ancient Greek ἡμισφαίριον (hēmisphairion), from ἡμι- (hēmi-, “half”) + σφαῖρα (sphaira).
    From Wiktionary