Fir·dau·si (fîr-dousē) also Fir·du·si (fər-dsē) or Fer·dow·si (fĕr-dousē) Pen name of Abu-l-Qasim Mansur. 940?-1020?
Persian epic poet whose Book of Kings (1010) recounts the history of Persia from the arrival of the Persians to the Arab conquest.
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.