hemisphere


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Related to hemisphere: western hemisphere

hemisphere

 [hem´ĭ-sfēr]
half of a spherical or roughly spherical structure or organ.
cerebral hemisphere one of the paired structures constituting the largest part of the brain, which together comprise the extensive cerebral cortex, centrum semiovale, basal ganglia, and rhinencephalon, and contain the lateral ventricle. See also brain.
cerebellar hemisphere either of the paired portions of the cerebellum lateral to the vermis.
dominant hemisphere the cerebral hemisphere that is more concerned than the other in the integration of sensations and the control of many functions. See also laterality.

hem·i·sphere

(hem'i-sfēr), [TA]
Half a spheric structure.
Synonym(s): hemispherium [TA]
[hemi- + G. sphaira, ball, globe]

hemisphere

/hemi·sphere/ (hem´ĭ-sfēr) half of a spherical or roughly spherical structure or organ.
cerebellar hemisphere  either of two lobes of the cerebellum lateral to the vermis.
cerebral hemisphere  one of the paired structures forming the bulk of the human brain, which together comprise the cerebral cortex, centrum semiovale, basal ganglia, and rhinencephalon, and contain the lateral ventricles.
dominant hemisphere  that cerebral hemisphere which is more concerned than the other in the integration of sensations and the control of voluntary functions.

hemisphere

(hĕm′ĭ-sfîr′)
n.
1.
a. A half of a sphere bounded by a great circle.
b. A half of a symmetrical, approximately spherical object as divided by a plane of symmetry.
2. Either half of the celestial sphere as divided by the ecliptic, the celestial equator, or the horizon.
3. 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.
4. Anatomy
a. Either of the lateral halves of the cerebrum; a cerebral hemisphere.
b. Either of the lateral halves of the cerebellum; a cerebellar hemisphere.

hem′i·spher′ic (-sfîr′ĭk, -sfĕr′-), hem′i·spher′i·cal adj.
hem′i·spher′i·cal·ly adv.

hemisphere

[hem′isfir]
Etymology: Gk, hemi + sphaira, sphere
1 one half of a sphere or globe.
2 the lateral half of the cerebrum or of the cerebellum. hemispheric, adj.

hem·i·sphere

(hem'is-fēr) [TA]
Half of a spheric structure.
Synonym(s): cerebral hemisphere (1) , hemisphericum.
[hemi- + G. sphaira, ball, globe]

Hemisphere

One of the two halves or sides-the left and the right-of the brain.
Mentioned in: Aphasia

hem·i·sphere

(hem'is-fēr) [TA]
Half a spheric structure.
[hemi- + G. sphaira, ball, globe]

hemisphere

half of a spherical or roughly spherical structure or organ.

cerebral hemisphere
one of the paired structures constituting the largest part of the brain, which together comprise the extensive cerebral cortex, centrum semiovale, basal ganglia and rhinencephalon, and contain the lateral ventricle. See also brain.
References in periodicals archive ?
To date, all but one African journal partner have visited the offices of their respective Northern Hemisphere partners.
e])] electron and proton detected in opposite hemispheres (3.
As processing within each hemisphere commences, the hemispheres rapidly send signals back and forth.
They had significant impairment in verbal memory and verbal learning when compared with controls and in visual memory when compared with controls and right hemisphere subjects.
It has well-established air routes, and is serviced by major international air carriers, that fly to many of the major cities in the Western Hemisphere.
With the expertise of our AERA-Right Hemisphere partners and the infrastructure we now have, we're able to produce 3D images in minutes, instead of the weeks it would have taken to recreate each image," says Paul Robinson, Maintainer IMI Project Manager of the Boeing--Sikorsky Comanche First Team.
Core members include ORIT (Organizacion Regional Interamericana de Trabajadores), which represents the major labor federations of the hemisphere (including the AFL-CIO) and nongovernmental groups from many countries (including the U.
Canadian anti-globalization (read: anti-United States) protestors who descended last month on Quebec City for the Summit of the Americas, a meetlng of the leaders of every state in the hemisphere except Cuba, hung up signs that read "Starbucks=Murder," "Get Out American Morons," "Cuba is More Free than Washington," and, my favorite, "Bush Sucks at his Father's Teat" (a rough translation from the French).
government truly wishes to eliminate drugs in the Western Hemisphere, a better effort should be made to provide Colombian peasants with alternatives to growing coca and opium.
The history of Chinese in the Western Hemisphere is also one of persecution, especially the brutal coolie trade and pernicious living conditions and work in Peruvian guano caves and on Cuban sugar plantations.
But in the Northern Hemisphere the only meaningful competition is the Five Nations.
Excursions to the southern continent in the seventeenth century augmented Europe's mystification of the world's other half, allowing the southern hemisphere briefly to flourish as a site of contestation in seventeenth-century literature.