Definition of hemisphere
1a : a half of the celestial sphere as divided into two halves by the horizon (see horizon 1b), the celestial equator, or the eclipticb : half of a spherical or roughly spherical body (such as a planet); specifically : the northern or southern half of the earth as divided by the equator (see equator 2) or the eastern or western half as divided by a meridian (see meridian 4a(2)) affected by the weather in the other hemispherec : the inhabitants of a hemisphere of the Earth
5 : cerebral hemisphere an injury to the left hemisphere
Examples of hemisphere in a Sentence
a tumor in the right cerebral hemisphere
Recent Examples of hemisphere from the Web
But no place in the hemisphere has seen faster growth.
The conference center was supposed to serve southern hemisphere nations.
The total solar eclipse that occurred in 1998 covered parts of the Northern and Southern hemisphere.
On Wednesday, NASA released new images of Saturn’s north polar region, which has changed color in the last four years, possibly because summer has reached the northern hemisphere.
Turning counter-clockwise in the northern hemisphere just like on Earth, the cyclones are clearly clustered near the poles.
The Trump administration’s push to deport more Central American gang members has alarmed officials here who fear the returning gangsters could exacerbate violence in one of the deadliest countries in the hemisphere.
Today, the flash of insight is measurable using brain scans, which show a part of the right hemisphere lights up at that moment.
By about 2002, an All American Free Trade Agreement is signed – integrating the entire hemisphere into one unified market.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hemisphere'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Did You Know?
Hemisphere includes the prefix hemi-, meaning "half". The northern and southern hemispheres are divided by the equator, the circle halfway between Earth's two poles. The eastern and western hemispheres aren't divided so exactly, since there are no poles in the Earth's east-west dimension. Often the dividing line is said to be the "prime meridian"—the imaginary north-south line that runs through Greenwich, England, from which all longitude is calculated (itself being the 0° meridian). But for simplicity's sake, the eastern hemisphere is often said to include all of Europe, Africa, Australia, and Asia, while the western hemisphere contains North and South America and a great deal of ocean.
Origin and Etymology of hemisphere
Middle English hemispere, from Latin hemisphaerium, from Greek hēmisphairion, from hēmi- + sphairion, diminutive of sphaira sphere
First Known Use: 14th century
HEMISPHERE Defined for English Language Learners
Definition of hemisphere for English Language Learners
: a half of the Earth
: half of a sphere : half of a round object
: either of the two halves of the brain
HEMISPHERE Defined for Kids
Definition of hemisphere for Students
1 : one of the halves of the earth as divided by the equator or by a meridian
2 : a half of a sphere
3 : either the left or the right half of the cerebrum
hemispheric\ˌhem-ə-ˈsfir-ik, -ˈsfer-\ or
hemispherical\-ˈsfir-i-kəl, -ˈsfer-\ adjective
Seen and Heard
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