Persian language ,one of the major Indoeuropean group of languages, presently known as "Farsi", though corrupted by of by intentional and nonintentional foreign and native scribes, poets and writers for hundreds of years, still survives with treasures of the original Persian language grammar and words. The author has relearned his mother tongue ie the "Persian language" through more than three decades of constant work on the Avestan, Sanskrit, Pahlavi languages, and through field work, surveying major dialects and semilanguages has now compiled this work "The etymology dictionary of the Persian language", the first in this field for a language with more than three millenia of history. The author is most grateful to the German scholars who had paved the road (see the references), making this research work possible. JGS