hemisphere
Definition from Wiktionary, the free dictionary
See also hémisphère
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English[edit]
Alternative forms[edit]
- hemisphære (archaic)
Etymology[edit]
From Latin hemisphaerium, from Ancient Greek ἡμισφαίριον (hēmisphairion), from ἡμι- (hēmi-, “half”) + σφαῖρα (sphaira).
Pronunciation[edit]
- (RP) IPA: /ˈhɛmɪsfɪə/, X-SAMPA: /"hEmIsfI@/
- (US) enPR: hĕ'mĭsfîr, IPA: /ˈhɛmɪsfɪər/, X-SAMPA: /"hEmIsfI@`/
Noun[edit]
hemisphere (plural hemispheres)
- (astronomy, astrology) Half of the celestial sphere, as divided by either the ecliptic or the celestial equator [from 14th c.].
- (figuratively) A realm or domain of activity [1503].
- (geography) Half of the Earth, such as the Northern Hemisphere, Southern Hemisphere, Western Hemisphere or Eastern Hemisphere, Land Hemisphere, Water Hemisphere etc. [1550s].
- (geometry) Any half-sphere, formed by a plane intersecting the center of a sphere. [1580s].
- (cartography) A map or projection of a celestial or terrestrial hemisphere [1706].
- (anatomy) Either of the two halves of the cerebrum. [1804].
Synonyms[edit]
- (astronomy: half of the celestial sphere): celestial hemisphere
- (geography: half of the terrestrial sphere): terrestrial hemisphere
- (figuratively: a domain of thought or action): sphere
- (geometry: half of a sphere): half-sphere, half sphere
- (anatomy: either of the two lobes of the cerebellum): cerebral hemisphere
- (cartography: a map showing a projection of a hemisphere): planisphere
Translations[edit]
half-sphere
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half of the Earth
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lobe of cerebrum
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