More about palimpsest
English palimpsest comes via Latin palimpsēstus from Greek palímpsēstos “rubbed again, scraped again,” i.e., in reference to durable parchment (not papyrus) “erased (so as to be able to be written upon) again.” Palimpsests are important in recovering the texts of ancient manuscripts. At least two unique ancient texts have been recovered through modern techniques of decipherment: the first text is Cicero’s dialogue De Re Publica (“On the Republic, On the Commonwealth”), which was discovered in the Vatican Library in 1819 and published definitively in 1908. The second major find is the Archimedes Palimpsest, containing seven treatises by the Greek scientist and mathematician Archimedes (c287-212 b.c.), which was made legible after decipherment performed between 1998 and 2008. Palimpsest entered English in the 17th century.