van de Velde, HenryEnglishOxford New American Dictionaryvan de Velde, Henry /ˌvan də ˈveldə, ˌvæn də ˈvɛldə / (1863–1957) , Belgian architect, designer, and teacher; full name Henry Clemens van de Velde. He pioneered the development of art nouveau design and architecture in Europe.