Ma`rif Aqli

The common definition of logicians, which is considered in the knowledge of objects, absolute limit, incomplete limit, complete formalism and incomplete formalism, and mostly seeks to explain conceptual causality, has nothing but general and theoretical definitions and has serious shortcomings such as ignoring non-permanent attributes in The change of identity, quality, and the incompatibility of theoretical definitions on objectivity, but since the definitions should pay attention to the importance of "becoming" and "change" in the universe, therefore, practical definitions that have the ability to pay attention to the two mentioned categories and while considering The timing and location of things can explain how they become And in accordance with the desired direction for the development of a phenomenon, they will provide the possibility of intervention and occupation in it, they will be the way forward. In addition, practical definitions are an obstacle to neutral knowledge and an obstacle to material relativism. In this article, with the analytical-critical method, while examining the theoretical definitions, the possibility and the necessity of providing practical definitions and their functions have been explained and analyzed.