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Definition of semicircle noun from the Oxford Advanced Learner's Dictionary

semicircle

noun
 
/ˈsemisɜːkl/
 
/ˈsemisɜːrkl/,
 
/ˈsemaɪsɜːrkl/
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  1. (geometry) one half of a circleTopics Colours and Shapesc2
  2. a thing, or a group of people or things, like a semicircle in shape
    • a semicircle of chairs
    • We sat in a semicircle round the fire.
    3. Word Originearly 16th cent.: from Latin semicirculus (see semi-, circle).
See semicircle in the Oxford Advanced American Dictionary
Check pronunciation: semicircle

Nearby words

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adjective
 
 
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