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semicircle

noun
🔊/ˈsemisɜːkl/
🔊/ˈsemisɜːrkl/, 🔊/ˈsemaɪsɜːrkl/
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  1. (geometry几何) one half of a circle半圆
    Topics Colours and Shapesc2
  2. a thing, or a group of people or things, like a semicircle in shape半圆形
    • a semicircle of chairs摆成半圆形的椅子
    • We sat in a semicircle round the fire.我们坐在炉火前，围成一个半圆形。🔊🔊
    3. Word Originearly 16th cent.: from Latin semicirculus (see semi-, circle).