JAUHARI (ABU NASR ISMAIL IBN HAMMAD UL-JAUHARI) (d. 1002 or ioio), Arabian lexicographer, was born at Farab on the borders of Turkistan. He studied in Farab and Bagdad, and settled first in Damghan, then at Nishapur, where he died. His great work is the Kitdb us-Sandh fil-Lugha, an Arabic dictionary, in which the words are arranged alphabetically according to the last letter of the root. He only partially finished the last recen sion, but the work was completed by his pupil, Abu 'shag Ibrahim ibn Salih ul-Warraq.