vertex
(anatomy) The highest surface on the skull; the crown of the head.
(geometry) An angular point of a polygon, polyhedron or higher order polytope.
The common point of the two rays that form an angle.
The point at which an axis meets a curve or surface.
(mathematics) A point on the curve with a local minimum or maximum of curvature.
(graph theory) One of the elements of a graph joined or not by edges to other vertices.
(computer graphics) A point in 3D space, usually given in terms of its Cartesian coordinates.
(optics) The point where the surface of a lens crosses the optical axis.
(particle physics) An interaction point.
(astrology) The point where the {{w|prime vertical}} meets the ecliptic in the western hemisphere of a natal chart.
(typography) A sharp downward point opposite a crotch, as in the letters "V" and "W" but not "Y".