  This paper describes a new system for semi-automatically building, extending
and managing a terminological thesaurus---a multilingual terminology dictionary
enriched with relationships between the terms themselves to form a thesaurus.
The system allows to radically enhance the workflow of current terminology
expert groups, where most of the editing decisions still come from
introspection. The presented system supplements the lexicographic process with
natural language processing techniques, which are seamlessly integrated to the
thesaurus editing environment. The system's methodology and the resulting
thesaurus are closely connected to new domain corpora in the six languages
involved. They are used for term usage examples as well as for the automatic
extraction of new candidate terms. The terminological thesaurus is now
accessible via a web-based application, which a) presents rich detailed
information on each term, b) visualizes term relations, and c) displays
real-life usage examples of the term in the domain-related documents and in the
context-based similar terms. Furthermore, the specialized corpora are used to
detect candidate translations of terms from the central language (Czech) to the
other languages (English, French, German, Russian and Slovak) as well as to
detect broader Czech terms, which help to place new terms in the actual
thesaurus hierarchy. This project has been realized as a terminological
thesaurus of land surveying, but the presented tools and methodology are
reusable for other terminology domains.
