The scroll of papyrus is called "volumen" in Latin, a word which signifies "circular movement," "roll," "spiral," "whirlpool," "revolution" (similar, perhaps, to the modern English interpretation of "swirl") and finally "a roll of writing paper, a rolled manuscript, or a book." In the 7th century Isidore of Seville explains the relation between codex, book and scroll in his Etymologiae (VI.13) as this: