Noun: semicircle 'se,mI,sur-kul or 'se-mee,sur-kul [N. Amer], 'se-mee,sur-kul [Brit]
- A plane figure with the shape of half a circle
"The students sat in a semicircle around the teacher";
- hemicycle
Derived forms: semicircles
Type of: plane figure, two-dimensional figure
Encyclopedia: Semicircle