English Explanatory Dictionary

hemisphere

English dictionary entry

Meanings

noun
  1. Half of the celestial sphere, as divided by either the ecliptic or the celestial equator .
  2. A realm or domain of activity .
  3. Half of the Earth, such as the Northern Hemisphere, Southern Hemisphere, Western Hemisphere or Eastern Hemisphere, Land Hemisphere, Water Hemisphere etc. .
  4. Any half-sphere, formed by a plane intersecting the center of a sphere. .
  5. A map or projection of a celestial or terrestrial hemisphere .
  6. Either of the two halves of the cerebrum. .

Pronunciation

/ˈhɛmɪsfɪə/ /ˈhɛmɪsfɪː/ /ˈhɛmɪsfɪj.ə/ hĕm'ĭsfîr /ˈhɛmɪsfɪɹ/ en-us-hemisphere.ogg /ˈhemɪsfɪə/ /ˈheməsfiə/ /ˈhɛmɪsfiɾ/ /ˈhɛmɪsfɛː/

Word forms

hemisphere hemispheres hemisphære

Etymology

From Latin hemisphaerium, from Ancient Greek ἡμισφαίριον (hēmisphaírion), from ἡμι- (hēmi-, “half”) + σφαῖρα (sphaîra, “sphere”). Equivalent to hemi- + sphere. Displaced native Old English healftrendel (literally “half-sphere”).

Synonyms

terrestrial hemisphere half sphere celestial hemisphere sphere half-sphere planisphere cerebral hemisphere

Related words

demisphere hemi- semisphere sphere dome

Derived words

Eastern Hemisphere Hemisphere hemispherectomy hemisphered hemispherian Hemispheric hemispherical hemispherically hemispheroid hemispheroidal hemispheroidally hemispherotomy interhemisphere Land Hemisphere Magdeburg hemisphere microhemisphere Northern Hemisphere semihemisphere southern hemisphere Water Hemisphere Western Hemisphere
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