Definition of vertex
plural vertices
play
\ˈvər-tə-ˌsēz\
also vertexes
1
:the top of the head
2 a
:the point opposite to and farthest from the base in a figure
b
:a point (as of an angle, polygon, polyhedron, graph, or network) that terminates a line or curve or comprises the intersection of two or more lines or curves
c
:a point where an axis of an ellipse, parabola, or hyperbola intersects the curve itself
3
:a principal or highest point :summit
- the vertex of the hill
