The Gran diccionari de la llengua catalana, published in 1999 by Enciclopèdia Catalana, is the latest and most comprehensive dictionary of Catalan language, containing 83,500 entries, 20,650 subentries and 164,500 definitions. It includes the lexicon of the Gran enciclopèdia catalana properly updated with the latest changes in spelling dictated by the Institut d'Estudis Catalans, and you can find, among other things, the history of words and the hyphenation of words that show some difficulty.