Mo'ammar Ibn Almosanna, Arabic lexicographer, grammarian and literary man, born in 727 / 731, in Basra –Iraq. He was educated in the presence of great scholars. Mo'ammar was the first person who wrote a book on the words and metaphors of the Quran. He was one of the great schoalars who had a wide knowledge of most of the sciences of his own time. He had over 60 students. Mo'ammar applied an independent method on "syntax". He was the most famous lexicographer as well. He had 200 works but few of them are left. Mo'ammar died in 824 in Baghdad.