Grosses vollständiges Universal-Lexicon, (German: “Great Complete Universal Lexicon”), large German encyclopaedia published from 1732 to 1750 by the Leipzig bookseller Johann Heinrich Zedler. It is noted for its accuracy and its biographical and bibliographical information; it was one of the first encyclopaedias to contain biographical information about living persons. The materials for the 64 volumes of the Grosses vollständiges Universal-Lexicon were prepared by nine editors.