IEC International Electrotechnical Vocabulary (IEV)

International Electrotechnical Commission
International Electrotechnical Vocabulary (IEV) online database

The IEC has been engaged in defining and standardizing electrotechnical terminology since 1909. This work is carried out under the auspices of TC1 (Terminology) and is published as the International Electrotechnical Vocabulary (IEV) comprising over 10 000 pages. The IEV is distributed as a set of publications (IEC 60050) and a CD-ROM. A limited selection of the IEV is also made available as an online database.

The online database contains some 20 000 terms in English, French, German and Spanish. It also provides definitions in English and French for the category of General Concepts (IEV parts 101 - 195).

Please send any queries or comments regarding the online database to the IEC Customer Service Centre.

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If you wish to have the complete IEV contents including definitions for all the IEV parts, as well as the equivalent terms in 12 languages, you can order the IEC Multilingual Dictionary on CD-ROM through the IEC Web Store.

IEC TC/SC chairmen and secretaries, as well as project leaders and working group convenors can request a copy of the CD-ROM from the IEC Central Office by clicking here.

The structure and content of the IEC databases are copyright of IEC. IEC encourages the use, referencing or citation of the contents of the databases for the purpose of identifying or clarifying the meaning of electrotechnical concepts, terms and symbols and their use in manuals, diagrams and equipment. IEC should be referenced as the source. Duplication of the databases or the extraction of substantial portions of them for commercial exploitation or for free sharing is prohibited without the explicit, written approval of the IEC.