ECEuroVoc is the European Union's multilingual, multidisciplinary thesaurus, serving as the primary controlled vocabulary for indexing and retrieving documents across EU institutions. With over 7,000 concepts available in 24 official EU languages plus Albanian, Macedonian, and Serbian, it is one of the largest and most widely deployed multilingual thesauri in the world.
Background
EuroVoc was created in 1984 by the European Parliament and the Publications Office of the European Communities (now the Publications Office of the European Union) to address the need for consistent subject indexing across the multilingual EU institutional landscape. Over four decades, it has evolved from a traditional printed thesaurus into a modern SKOS-based linked data vocabulary, reflecting the EU's commitment to open data and semantic interoperability.
Purpose & Scope
EuroVoc covers all areas of EU activity, organized into 21 thematic domains and 127 micro-thesauri. Domains range from politics and law to economics, science, environment, and international relations. The thesaurus provides hierarchical, associative, and equivalence relationships among concepts, enabling precise document indexing and cross-lingual search. Its primary function is to allow users searching in one EU language to find relevant documents regardless of the language in which they were indexed.
Key Domains
| Domain | Examples |
|---|---|
| Politics | Electoral procedure, parliament, political framework |
| Law | Civil law, criminal law, international law, rights and freedoms |
| Economics | Economic policy, trade, finance, taxation |
| Social Questions | Culture, education, health, social protection |
| International Relations | Cooperation policy, international organizations |
| Environment | Environmental policy, natural environment, pollution |
| Science | Research, natural sciences, applied sciences |
Serializations & Technical Formats
EuroVoc is published as a SKOS (Simple Knowledge Organization System) dataset in RDF/XML format. The complete thesaurus is available for download from the EU Vocabularies portal, and individual concepts can be dereferenced via their HTTP URIs. A SPARQL endpoint provides programmatic query access to the full dataset.
Governance & Maintenance
The Publications Office of the European Union maintains EuroVoc, with input from terminologists across EU institutions. Updates are published regularly to reflect new policy areas, institutional changes, and evolving terminology. The thesaurus is available under the European Union Public Licence (EUPL), and the EU Vocabularies portal provides tools for browsing, searching, and downloading the data.
Notable Implementations
EuroVoc is used by the European Parliament for indexing parliamentary documents and debates, by EUR-Lex for classifying EU legislation and case law, and by the Publications Office for cataloging official EU publications. National and regional parliaments across Europe also use EuroVoc, as do academic institutions and libraries working with EU materials. The Interactive Terminology for Europe (IATE) database uses EuroVoc as a foundation for its domain classifications.
Related Standards
- SKOS — The W3C standard in which EuroVoc is expressed as linked data
- UNESCO Thesaurus — A comparable multilingual thesaurus for international use in education, science, and culture