In the early years of the birth of specialized dictionaries (see Section 2) the primary ambition of the editors and publishers of technological dictionaries was to create a unified and at the same time Hungarian specialised language (Frecskay 1912, Péch 1879), and even in the 20th century the reason behind the publishing of the earlier presented Trilingual Technological Dictionary (Urbán–Soós 2002) was the large number of foreign investors in Hungary and the increased use of foreign words and expressions. Another important reason for creating technological dictionaries was to provide modern aid for professionals by making dictionaries that would also enhance international communication. This is what characterizes the Dictionary of Book and Paper Conservation in Five Languages (Beöthyné–Kastaly 1997) which contains in different languages and in alphabetical order the most often used terms of basic actions, materials, tools and instruments of book and paper restoration, bookbinding and some graphic techniques. The purpose of the dictionary is to make the reading, understanding and translation of technical literature easier for professionals. This gap filling work is primarily made for book and paper restoration professionals, but it is also useful for bookbinders, librarians, archivists and museologists.