Fuzzy systems have gained more and more attention from researchers and practitioners of various fields. In such systems, the output represented by a fuzzy set sometimes needs to be transformed into a scalar value, and this task is known as the defuzzification process. In this study, we suggest a new approach to the problem of defuzzification using the parametric metric between two fuzzy numbers. Some preliminary results on properties of such defuzzification are to be reported. Therefore, by the

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... means of this difuzzification, this article aims to use the concept of parametric symmetric triangular fuzzy number, and introduces a new approach to defuzzify a fuzzy quantity. The basic idea of the new method is to obtain the nearest parametric symmetric triangular fuzzy number which a fuzzy quantity is related to.