turning point

noun

1. a point at which a decisive change takes place; critical point; crisis.

2. a point at which something changes direction, especially a high or low point on a graph.

3. Surveying.,  a point temporarily located and marked in order to establish the elevation or position of a surveying instrument at a new station.

turning point

noun

1. a moment when the course of events is changed

   the turning point of his career

2. a point at which there is a change in direction or motion

3. maths a stationary point at which the first derivative of a function changes sign, so that typically its graph does not cross a horizontal tangent

4. surveying a point to which a foresight and a backsight are taken in levelling; change point

Word History and Origins

Origin of turning point¹

First recorded in 1850–55

Related Words

• climax 
• critical point 
• crux 
• culmination 
• juncture 
• twist