.......... ....... ........ ........... . .. . .......... ....... ........ ........... . .. . . 71 The Scientific Journal of NAZAR research center (Nrc) for Art, Architecture & Urbanism Bagh-e Nazar, 17(84), 71-80 /June 2020 Persian translation of this paper entitled: ی محصول طراحکی در هرمنوتیرشناسیفهوم پدیدا تبیین م is also published in this issue of journal. DOI: 10.22034/bagh.2020.182942.4087 Received: 25/04/2019 ; revised: 20/08/2019 ; accepted: 25/09/2019 ; available online: 21/05/2020 Explaining the Notion of Hermeneutic Phenomenology in Product Design Ashraf sadat Mousavilar 1 , Behzad Soleimani *2 , Masoumeh Esmaeelzadeh 3 1. Professor of art research department, art faculty of alzahra university, Tehran, iran. 2. Assistant professor of industrial design department, art faculty of alzahra university, Tehran, iran. 3. Ph.D candidate of art research department, Art Faculty of Alzahra University, Tehran, Iran. * Corresponding author: 09121039955, b.soleimani@alzahra.ac.ir Abstract Problem Statmen: The hermeneutic phenomenology is the establishing of a relationship of Being. How these relations can be manifested in a human being in the world is one of the most important concerns of philosophers, including Heidegger - the famous German philosopher. Purpose of the Study: This paper intends to provide an interpretation of phenomenology that can be considered and implemented in the design process. After fully description of hermeneutic phenomenology that is specifically identified with Heidegger’s ideas, we further clarify this notion by elucidating five certain steps from it that include: Temporality, Establishing a meaningful relationship with the triple extent of temporality, Establishing a relationship of Being between human and phenomena, Establishing the hermeneutical relationship, and Disclosedness. Reserch Methodology: Then, through the case study method, we evaluate three sample products to interpret the steps extracted from this approach. In the following, by presenting a model, we illustrate the relationship between the phenomenological approach and the design process, the way it is applied, and its generalizability in the process. The triple extent of temporality (factuality, presence, and futurity) forms the central core of this model. Finally, we analyze another product to test the proposed model. Conclusin: The result of this paper makes it clear that the phenomenological approach not only can use in product design, but also the case studies show that the use of this method has been able to influence on the success of the user’s interaction with the product during the industrial design history. Keywords: Hermeneutic Phenomenology, Product Design, Temporality, Disclosedness, Presence.