circumcircleWiktionary 原文英/ˌsɜː.kʌmˈsɜː.kəl/美/ˌsɝ.kʌmˈsɝ.kəl/构词拆解circumcircum-前缀circlecircle词干circum-around, surrounding词源说明From circum- + circle.释义名词noun1(geometry) A circle that passes through every vertex of a given triangle (or other polygon where possible).