catholicon

First printed in Tréguier on this day in 1499 with editions and updates continuing until 2001, the trilingual dictionary—in the sense of universal—was the sum of the complied entries by Bretagne priest Jehan Lagadeuc over the course of some three decades and was the first published Breton and French dictionary, referent to Latin. Sometimes referred to as the Catholicon Armoricum (from the Roman name for Brittany) to distinguish it from the Catholicon Anglicum—an English-Latin grammar—that emerged around the same time.