semi·cir·cle 
/ˈsɛmiˌsɚkəl/ noun
plural semi·cir·cles /ˈsɛmiˌsɚkəl/ noun [count] 1 : half of a circle 2 : an arrangement of people or things that forms a semicircle
▪ The children sat in a semicircle. ▪ The houses are built in a semicircle.
▪ The children sat in a semicircle. ▪ The houses are built in a semicircle.
— semi·cir·cu·lar /ˌsɛmiˈsɚkjəlɚ/ adjective
▪ a semicircular driveway
/ˌsɛmiˈsɚkjəlɚ/ adjective ▪ a semicircular driveway
