RailLexic online (RLO) is UIC’s term bank and the leading reference in the field of multilingual rail terminology.

It presents up to 12,000 railway concepts with equivalent terms in the following 23 languages: Arabic, Czech, Danish, Dutch, English, Esperanto, Finnish, French, German, Hungarian, Italian, Japanese (not yet complete), Norwegian, Persian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Spanish, Swedish and Turkish.

The concepts are classified into 105 railway-specific subject fields and are annotated with grammatical information. Some also feature definitions, notes and other useful indications, such as a source or a geographical preference.

RailLexic online is updated by the UIC Terminology Group and available online as a yearly subscription via the ETF shop.

NB: UIC Members benefit from a significant discount.

RLO search interface

Railway terminology at UIC

The UIC Terminology Group is composed of the UIC terminologist and representatives of the UIC Members. They collaborate with technical experts to provide the railway sector with accurate, equivalent terms. The aim is to facilitate multilingual communication at an international level.

Mailing list on railway terminology

The uic.terminology mailing list is an electronic discussion and information forum for all those dealing with railway terminology, translations in the railway field and technical background information (in printed form and on the web), etc.

It is a moderated list and you can choose a digest option in order to receive messages, e.g. no more than once a day.

If you are looking for a technical term related to railways, a definition for a railway concept, a document or a website on a railway topic, you can post your query to the list and will hopefully get an answer from another subscriber.

You can also simply share information you consider to be of interest to other members of the list. In this way we can help each other and form a network of railway specialists.

To subscribe, please visit the list home page.
Then, click on ‘Subscribe’ on the left to add your e-mail address and your name. Thank you!


For any order, please visit our online shop ETF or send an email to [email protected]

For more information on terminology at UIC: [email protected]

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