While a complete English translation is not available, you can find Arabic editions and scholarly analyses of its grammatical structures in English:
It introduced the concept of roots (radicals) and used permutations and combinations to identify all possible Arabic words. Kitab Al Ayn English Pdf
The original text in Arabic is available through repositories like the Internet Archive and sites like Noor Library , which offer digital copies of the eight-volume Maktabah Al Hilal edition. While a complete English translation is not available,
It begins with the letter Ayn (ع), which al-Farahidi identified as the deepest sound produced in the throat, giving the book its name. Instead of the standard alphabetical order used today,
(كتاب العين), compiled by the 8th-century scholar al-Khalil ibn Ahmad al-Farahidi , is widely recognized as the first dictionary of the Arabic language. While it is a cornerstone of classical Arabic linguistics, finding a complete "Kitab Al Ayn English PDF" can be challenging because no full, standard English translation currently exists for the entire multi-volume work. The Legacy of Kitab al-Ayn
Compiled in during the Abbasid era, the dictionary was revolutionary for its unique phonetic arrangement. Instead of the standard alphabetical order used today, al-Farahidi organized words based on their makhraj (the point of articulation in the throat and mouth).