|Dictionaries - specialised
Electrical: Electropedia (IEV Online)
Electropedia (also known as the "IEV Online") is the world's most comprehensive online electrical and electronic terminology database containing more than 20 000 terms and definitions in English and French organized by subject area, with equivalent terms in various other languages: Arabic, Chinese, German, Italian, Japanese, Portuguese, Polish, Russian, Spanish and Swedish (coverage varies by subject area).
EU: Interactive Terminology for Europe (IATE)
The EU's database of terminology in all languages used in the 27 member states. Terminology covers a vast range of specialist areas.
Medical: Terms in nine European languages
Multilingual glossary of technical and popular medical terms in nine European languages, commissioned by the European Commission (DG III) and executed by Heymans Institute of Pharmacology and Mercator School, Department of applied Linguistics.
Slang: Urban Dictionary
Urban Dictionary is a slang dictionary with about 4 million entries.