This handbook for German/English/German technical translators at all levels from student to professional covers the root terminologies of the spectrum of scientific and engineering fields. Volume 2 expands this terminology with the aid of a Technical Thesaurus and a set of structured bilingual dictionaries which draw attention to specific English/German errors, usage of technical vocabulary and to collocations of general vocabulary in engineering contexts. The two volumes combine 3 major areas: 1. Technical Translation, 2. General Linguistics and 3. Computational Lexicography, possibly indirectly marking the birth of a new discipline “Technical Linguistics”.