Aluminium-Schlüssel
Informations about alloys, supplier and others.
Duden
German-language dictionary.
Langenscheidt Online-Wörterbuch
Dictionary with specialized vocabulary in more than 20 languages.
The New Palgrave Dictionary of Economics
Special dictionary on economy.
Wikipedia
You probably know that.
Standard-Thesaurus Economy
Structured collection of terms which you can use for your research.
TEMA Thesaurus
Collection of terms from technology and management.
Thesaurus by EBSCOhost
Collection of economic terms inside the Business Source Elite Database.