Definition of circumcircle in English:

circumcircle

noun

Geometry
  • A circle touching all the vertices of a triangle or polygon.

    • ‘The circumcircles of the four triangles meet in a point.’
    • ‘The circumcircle of a triangle formed by three tangents to a parabola passes through the focus of the parabola.’
    • ‘The three lines through the incircle and the circumcircle of the three triangles meet at a point.’
    • ‘It has one circumcircle, on the intersection of the two lines.’
    • ‘Prove that the circumcircles of the triangles BMR and CNR have a common point lying on the side BC.’

Pronunciation:

circumcircle

/ˈsəːkəmsəːk(ə)l/