Mu'jam Maqayis al-Lughah (Lexicon of Language Standards) by the renowned linguist Abu al-Husayn Ahmad ibn Faris is a monumental work in Arabic lexicography. This comprehensive Arabic-Arabic dictionary delves into the fundamental root meanings of words, tracing their etymological origins and semantic development. Unlike conventional dictionaries, Ibn Faris's approach focuses on the core 'measurements' or standards that govern word derivations, providing profound insights into the intricate structure of the Arabic language. It is an indispensable resource for scholars, linguists, and students seeking a deep understanding of Arabic vocabulary, its historical evolution, and the underlying principles that shape its vast lexicon. Edited by Ibrahim Shams al-Din, this edition ensures accuracy and accessibility for modern readers.