Öz
It is important to know the meanings of words when a language is learned. Besides this it is clear that the meanings of the words become narrowed or widened in time. It is possible to come across all of these situations which are mentioned above in the Arabic language. The Arabs are confronted with a new belief and a new culture with Islam. These new beliefs and cultures bring new values to their old, beliefs and cultures, new words to their tongues, as well as new changes to existing words or changes in used manners. Also the languages of the Qur’an as the miracle play a great role in this. Thanks to the Qur’an-based language studies, Arab language reached development level in the present time. In this article, for the correct understanding of the Qur’ãn as a small contribution, I will examine the word عَقَل in term of semantic. First of all, the meanings of this word searched classical Arabic lexicon and then the word determined from Qur’ãn verses. Besides this I will give some interpreter opinions about the meaning of this word. Thanks to these I will try to determine that whether the meaning of the word narrowed or not.