hemisphere

hemisphere
noun
  1. a half of a sphere
    半球，半球体
    ■a half of the earth, usually as divided into northern and southern halves by the equator, or into western and eastern halves by an imaginary line passing through the poles
    （地球的）半球
    ■a half of the celestial sphere
    （天球的）半球
    ■(亦作 cerebral hemisphere)each of the two parts of the cerebrum (left and right) in the brain of a vertebrate
    （脊椎动物的）大脑半球
派生
hemispheric
adjective
hemispherical
adjective
hemispherically
adverb
语源
  1. late Middle English (in the sense 'half the celestial sphere, the sky'): from Old French emisphere, via Latin from Greek hēmisphairion, from hēmi- 'half' + sphaira 'sphere'
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