Meaning of “semicircle” in the English Dictionary

british dictionary

"semicircle" in American English

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semicirclenoun [ C ]

us /ˈsem·iˌsɜr·kəl/

geometry half of a circle, or something in this shape:

Our tents were set in a semicircle.

(Definition of “semicircle” from the Cambridge Academic Content Dictionary © Cambridge University Press)