The Supplément aux dictionnaires arabes by R.P.A. Dozy was originally published in 1881. It was based on a novel approach to Arabic lexicography, because it was based on a rich corpus of a variety of texts from a more extended period of time than most earlier dictionaries. More than a century later, it continues to be an indispensable reference work for students and scholars alike.
Reinhart P.A. Dozy (1820-1883) was the most impressive Dutch Arabist of his day who was never appointed professor of Arabic in Leiden. His works on Muslim Andalusia brought about a scholarly revolution in the field and were translated in many languages.