semicircle

Từ điển Oxford Advanced Learner 8th

semi·circle [semicircle semicircles] BrE [ˈsemisɜːkl] NAmE [ˈsemisɜːrkl] noun
1. (geometry)one half of a circle
2. the line that forms the edge of a semicircle
3. a thing, or a group of people or things, shaped like a semicircle
•a semicircle of chairs
•We sat in a semicircle round the fire.
Derived Word: ↑semicircular

Word Origin:
early 16th cent.: from Latin semicirculus (see ↑semi-, ↑circle).

Example Bank:
•We sat in a semicircle around the fire.