Professional, fast, completely offline electrical engineering dictionary based on the database of the International Electrotechnical Commission. It includes translations and definitions* for over 20,000 terms in 22 languages. Below is a list of languages and the available translations for each:

English (22,497),
French (22,497),
Polish (22,477),
Japanese (22,467),
Portuguese (22,175),
German (21,671),
Korean (21,169),
Chinese (21,074),
Arabic (20,546),
Italian (19,269),
Spanish (19,175),
Swedish (14,238),
Finnish (8,958),
Serbian (7,185),
Czech (4,830),
Norwegian (Bokmål) (2,758),
Slovenian (2,532),
Mongolian (2,436),
Norwegian (Nynorsk) (2,422),
Russian (2,195),
Dutch (1,869).

*Definitions are available in English and French. Translations of definitions will be added in the future.