“WordNet® is a large lexical database of English, developed under the direction of George A. Miller. Nouns, verbs, adjectives and adverbs are grouped into sets of cognitive synonyms (synsets), each expressing a distinct concept. Synsets are interlinked by means of conceptual-semantic and lexical …
A set of dictionary related material (definitions, thesauri, jargon files etc) bundled together with an API.
A full list of the data included can be found on [this page](http://www.dict.org/bin/Dict?Form=Dict1&Query=00-database-info&Strategy=&Database=)
APIs in form of standar …
Datasets produced by the [pleiades project](http://pleiades.stoa.org/about-pleiades):
> Organized by the Ancient World Mapping Center at the University of North Carolina at Chapel Hill, U.S.A., Pleiades brings together a global community of scholars, students and enthusiasts to e …
A thesaurus in 20+ languages for terms related to the environment and environmental data. Published by the European Environment Agency.
Available in RDF without reuse constraints.