polygraph

A polygraph (from Ancient Greek: πολύς, poly = "many" and γράφειν, graphein = "to write") is an author who writes in a variety of fields. In literature, the term polygraph is often applied to certain writers of antiquity such as Aristotle, Plutarch, Varro, Cicero and Pliny the Elder. Polygraphs still existed in the Middle Ages and Renaissance, but, other than writers of books for children, they have become rarer in modern times due to the specialisation of knowledge. Voltaire and Diderot are examples of modern polygraphs.