- a point at which a decisive change takes place; critical point; crisis.
- a point at which something changes direction, especially a high or low point on a graph.
- a point temporarily located and marked in order to establish the elevation or position of a surveying instrument at a new station.
- a moment when the course of events is changed
- a point at which there is a change in direction or motion
- a stationary point at which the first derivative of a function changes sign, so that typically its graph does not cross a horizontal tangent
- a point to which a foresight and a backsight are taken in levelling; change point
