opisthograph

Etymology

From opistho- + -graph.

opisthograph means any early document (such as a roll of papyrus) that has writing on the back as well as the front. Lexicurio rates it Sui generis — a strength score of 87 out of 100.

noun

Any early document (such as a roll of papyrus) that has writing on the back as well as the front.
Any early book that has letterpress printing on both sides of the page.