hemisphere

hemi·sphere

noun \ˈhe-mə-ˌsfir\

Definition of HEMISPHERE

1

a : a half of the celestial sphere as divided into two halves by the horizon, the celestial equator, or the ecliptic

b : half of a spherical or roughly spherical body (as a planet); specifically : the northern or southern half of the earth as divided by the equator or the eastern or western half as divided by a meridian

c : the inhabitants of a terrestrial hemisphere

2

: realm, province

3

: one of two half spheres formed by a plane through the sphere's center

4

: a map or projection of a celestial or terrestrial hemisphere

5

: cerebral hemisphere

— hemi·spher·ic \ˌhe-mə-ˈsfir-ik, -ˈsfer-\ or hemi·spher·i·cal \-ˈsfir-i-kəl, -ˈsfer-\ adjective

Examples of HEMISPHERE

1. a tumor in the right cerebral hemisphere

Origin of HEMISPHERE

Middle English hemispere, from Latin hemisphaerium, from Greek hēmisphairion, from hēmi- + sphairion, diminutive of sphaira sphere

First Known Use: 14th century

Other Astronomy Terms

gibbous, nadir, nebulous, penumbra, retrograde, sidereal, syzygy, wane, wax, zenith

Rhymes with HEMISPHERE

Agadir, atmosphere, auctioneer, balladeer, bandolier, bathysphere, bayadere, Bedfordshire, Bedivere, belvedere, bend one's ear, biosphere, bombardier, boutonniere, brigadier, buccaneer, budgeteer, Cambridgeshire, cameleer, cannoneer, canyoneer, cassimere, cavalier, chandelier, chanticleer, chevalier, chiffonier, chocolatier, chromosphere, commandeer, corsetiere, crystal clear, cuirassier, Derbyshire, diapir, disappear, domineer, ecosphere, Elzevir, engineer, exosphere, fallow deer, fictioneer, financier, fiscal year, fourdrinier, fusilier, gadgeteer, gasolier, gazetteer, ginger beer, Gloucestershire, gondolier, grenadier, Guinevere, Hertfordshire, Holy Year, inner ear, insincere, interfere, in the clear, jardiniere, junketeer, kerseymere, landing gear, lavaliere, marketeer, Meyerbeer, middle ear, missileer, mountaineer, muleteer, musketeer, mutineer, on one's ear, outer ear, overhear, overseer, oversteer, Oxfordshire, pamphleteer, persevere, photosphere, pioneer, pistoleer, privateer, profiteer, puppeteer, racketeer, rocketeer, running gear, scrutineer, sloganeer, sonneteer, souvenir, Staffordshire, steering gear, stratosphere, summiteer, swimmer's ear, thermosphere, troposphere, Tyne and Wear, understeer, vintage year, Vladimir, volunteer, Warwickshire, Windermere, yesteryear

hemi·sphere

noun \-ˌsfi(ə)r\   (Medical Dictionary)

Medical Definition of HEMISPHERE

: half of a spherical structure or organ: as a : cerebral hemisphere b : either of the two lobes of the cerebellum of which one projects laterally and posteriorly from each side of the vermis