Timing

Though there are various definitions for what is referred to as timing in the martial arts, generally it refers to the ability to know the right moment to execute a technique. This means that you have the capacity to recognize openings in your opponents defense and to capitalize upon those opportunities. 

What is the right time? It's the time at which the move can be the most effective. 



Principles and Concepts For Martial Arts

The Principles of Unarmed Combat pg 96