Meaning

1. The highest point, top or apex of something.
2. The highest point, top or apex of something.
3. An angular point of a polygon, polyhedron or higher order polytope.
4. An angular point of a polygon, polyhedron or higher order polytope.
5. A point on the curve with a local minimum or maximum of curvature.
6. One of the elements of a graph joined or not by edges to other vertices.
7. A point in 3D space, usually given in terms of its Cartesian coordinates.
8. The point where the surface of a lens crosses the optical axis.
9. An interaction point.
10. The point where the prime vertical meets the ecliptic in the western hemisphere of a natal chart.
11. A sharp downward point opposite a crotch, as in the letters "V" and "W" but not "Y".