An open, extendible multi-dictionary system is introduced in the paper. Simultaneously an unlimited number of dictionaries can be held open, thus by a single query step, all the dictionaries (translations, explanations, synonyms, etc.) can be looked up. The implemented system (called MoBiDic) knows morphological rules of the dictionaries\u27 languages. Thus, never the actual (inflected) words, but always their lemmas - that is, the right dictionary entries - are looked up. MoBiDic has an open, multimedia architecture. It has been designed for translator workgroups using intranet or internet
