CORDERIUS, the Latinized form of name used by Mathdrin Cordier (1478-1564), the author of the well-known Colloquia, a native in Normandy. He possessed special tact and liking for teaching children, and taught first at Paris, where Calvin was among his scholars, and, after a number of changes, finally at Geneva. He wrote several books for children; the most famous is his Colloquia, which has passed through innumerable editions, being used in schools for three centuries after his time.

He also wrote— Principia Latine Loquendi Scribendique, selecta ex Epistolis Ciceronis; De Corrupti Sermonis apud Gallos Emendatione et Latini Loquendi Ratione; De Quantitate Syllabarum; Conciones Sacroe Gallice; Remontrances et exhortations au roi et aux grands de son royaume (Geneva, 1561).