...
UNTERM is a multi-lingual terminology database maintained by the United Nations and other specialised agencies of the UN system, including the World Health Organization.
IATE is the EU's terminology database which is being used by the EU institutions and agencies
Lexilogosoffers a list of resources by language. You select your language, then type in the word you are looking for and choose which dictionary you would like to use. This is a quick way of comparing resources to ensure you’ve chosen the right translation.
...