Woordenboek der Nederlandsche Taal (Dutch: Dictionary of the Dutch language) is a dictionary of the Dutch language. It is said to be the largest dictionary in the world with over 430,000 entries of Dutch words from 1500 to 1921 and the paper edition consists of 43 volumes and close to 50,000 pages. The dictionary was almost 150 years in the making: the first fascicle (A-Aanhaling) was published in 1863 and the last (Zuid-Zythum) in 1998. Three supplements to the original dictionary text containing modern-day Dutch words were published in 2001. The dictionary is currently available as an online dictionary, which has been available since 27 January 2007. There is no charge for access.
It is published by the Instituut voor Nederlandse Lexicologie (Institute for Dutch Lexicology).