Definition of Hemisphere

1. Noun. Half of the terrestrial globe.

2. Noun. Half of a sphere.
Generic synonyms: Subfigure
Derivative terms: Hemispherical

3. Noun. Either half of the cerebrum.
Exact synonyms: Cerebral Hemisphere
Generic synonyms: Neural Structure
Specialized synonyms: Left Brain, Left Hemisphere, Right Brain, Right Hemisphere
Group relationships: Cerebrum
Derivative terms: Hemispheric, Hemispherical

Definition of Hemisphere

1. n. A half sphere; one half of a sphere or globe, when divided by a plane passing through its center.

Definition of Hemisphere

1. Noun. (astronomy), (astrology) Half of the celestial sphere, as divided by either the ecliptic or the celestial equator (defdate from 14th c.). ¹

2. Noun. (figuratively) A realm or domain of activity (defdate 1503). ¹

3. Noun. (geography) Half of the Earth, such as the Northern Hemisphere, Southern Hemisphere, Western Hemisphere or Eastern Hemisphere, Land Hemisphere, Water Hemisphere etc. (defdate 1550s). ¹

4. Noun. (geometry) Any half-sphere, formed by a plane intersecting the center of a sphere. (defdate 1580s). ¹

5. Noun. (cartography) A map or projection of a celestial or terrestrial hemisphere (defdate 1706). ¹

6. Noun. (anatomy) Either of the two halves of the cerebrum. (defdate 1804). ¹

¹ Source:

Definition of Hemisphere

1. [n -S]

Medical Definition of Hemisphere

1. 1. A half sphere; one half of a sphere or globe, when divided by a plane passing through its center. 2. Half of the terrestrial globe, or a projection of the same in a map or picture. 3. The people who inhabit a hemisphere. "He died . . . Mourned by a hemisphere." (J. P. Peters)ten Cerebral hemispheres. See Brain. Magdeburg hemispheres, two hemispherical cups forming, when placed together, a cavity from which the air can be withdrawn by an air pump; used to illustrate the pressure of the air. So called because invented by Otto von Guericke at Magdeburg. Origin: L. Hemisphaerium, Gr.; half = sphere: cf. F. Hemisphere. See Hemi-, and Sphere. Source: Websters Dictionary (01 Mar 1998)

Hemisphere Pictures

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Lexicographical Neighbors of Hemisphere

hemipterous insect
hemisphere (current term)
hemispherium cerebelli
hemispherium cerebri

Literary usage of Hemisphere

Below you will find example usage of this term as found in modern and/or classical literature:

1. Anatomy: Descriptive and Surgical by Henry Gray, Thomas Pickering Pick (1897)
"It then passes outward to the external surface of the hemisphere, and gives off a short anterior limb, which passes forward, and another, ascending limb, ..."

2. Encyclopaedia Britannica: A Standard Work of Reference in Art, Literature (1907)
"When the polar and temperate regions of the one hemisphere are covered to a large ... The trades on that hemisphere will, of necessity, be exceedingly ..."

3. The Encyclopaedia Britannica: A Dictionary of Arts, Sciences, Literature and (1911)
"Upper Carboniferous plants of the northern hemisphere fades, ... floras of the northern hemisphere. In his account of some plants from the Coal Measures of ..."

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