Rosetta Stone
proper noun
Forms the Rosetta Stone
- proper noun A large inscribed stone found near Rosetta, Egypt, in 1799, later used as a basis for understanding many previously undecipherable examples of hieroglyphic writing.
- proper noun (by extension) Any source of information crucial to interpreting. “My friend’s carefully-compiled notebook was the Rosetta Stone that opened up understanding of the physics lectures.”
Webster’s 1913
- A stone found at Rosetta, in Egypt, bearing a trilingual inscription, by aid of which, with other inscriptions, a key was obtained to the hieroglyphics of ancient Egypt. Brande & C.
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “Rosetta Stone”, CC BY-SA 4.0. Details