plural vertices /ˈvɚtəˌsiːz/ also vertexes plural vertices /ˈvɚtəˌsiːz/ also vertexes Learner's definition of VERTEX
[count] technical
: a point where two lines meet to form an angle
especially : the point on a triangle that is opposite to the base角顶；顶点；（尤指）三角形的角顶