The Diccionari català-valencià-balear is the most important lexicographic work of the Catalan language and of all the Romance languages. Pioneered by Antoni M. Alcover during the decade of 1920 and written up mostly by Francesc de Borja Moll, this lexical and etymological inventory includes more than 160.000 articles of the ancient and modern, dialectal and literary Catalan, and it took sixty-two years to complete it.

The electronic edition, completely and freely accessible through the Internet, is the culmination of the process of digitalisation pioneered in 2001 by the Institute for Catalan Studies, with the collaboration of the governments of the Balearic Islands, Catalonia and Andorra and Editorial Moll, the owner of the work. This virtual dictionary, which replays the conventional consultation of the printed dictionary, contains 20.000 columns of text, 70 megas of textual information and 1.500 illustrations in black and white.