cir ‧ cum ‧ flex /ˈsɜːkəmfleks $ ˈsɜːr-/ BrE AmE noun [countable]
[ Date: 1500-1600 ; Language: Latin ; Origin: past participle of circumflectere 'to bend around' , from circum- ( CIRCUM- ) + flectere 'to bend' ]
a mark placed above a letter in various languages such as French, for example ô