semantic evolution of the words and its impact on the understanding of the commentator of the qur'an from the hermeneutic perspective

meaning of the word which based on the context is one of the hermeneutic rules. according to these rules, every context has a central meaning that the author has intended. as well, commentators of the text have to know this central meaning. after the revelation of the holy qur'an, some words of the qur'an have found new meaning. some of the commentators of the qur'an attribute these new meanings to the qur'an whit no reason. they attempt to understand and interpret the qur'an depending to them. therefore, as result of this situation many new and different realizations have been generated. the goal of this paper is to give some examples and clarify the evolution of their meaning.