Rosetta of a Coptic toponym, "Trashit". "Rosetta" or "Rosette" was the name used by the French at the time of Napoleon Bonaparte's campaign in Egypt and thus became eponymous of the Rosetta Stone (), which was found by French soldiers at the nearby Fort Julien in 1799. The site of Rosetta was inhabited throughout the history of Ancient Egypt, then known as "", a hieratic word meaning "the populace", under Menes reign. In the Ptolemaic era, the town was renamed to "Bolbitine" ("Bolbitinum, Bolbitinon", the name of one of the seven mouths of the Nile in Herodotus). In Christian Egypt, the
Rosetta Stone on spectroscopy wrote that "the spectrum of the hydrogen atoms has proved to be the Rosetta stone of modern physics: once this pattern of lines had been deciphered much else could also be understood". Fully understanding the key set of genes to the human leucocyte antigen has been described as "the Rosetta Stone of immunology". The flowering plant "Arabidopsis thaliana" has been called the "Rosetta Stone of flowering time". A Gamma ray burst (GRB) found in conjunction with a supernova has been called a Rosetta Stone for understanding the origin of GRBs. The technique of Doppler echocardiography has been called