Rosetta Stone

Definitions of Rosetta Stone
  1. noun
    a part of an inscribed granite stela that was originally about six feet tall and was set up in 196 BC; the inscriptions in hieroglyphics and Demotic and Greek gave the first clues to the decipherment of Egyptian hieroglyphics
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    example of:
    stela, stele
    an ancient upright stone slab bearing markings
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