INIS Interactive Multilingual Thesaurus

"The terms in the Joint Thesaurus are listed alphabetically. For each alphabetical entry, a 'word block', containing the terms associated with this particular entry, is displayed. In the word block, terms that have a hierarchical relationship to the entry are identified by the symbols BT for Broader Term, and NT for Narrower Term; a term with an affinitive relationship is identified by RT, for Related Term; terms with a preferential relationship are identified by USE or SEE, and UF for Used For, and SF for Seen For. In case of multiple USE relationships for a forbidden term, all listed descriptors should be used to index or search a given concept. In case of multiple SEE relationships, one or more of the listed descriptors should be considered for indexing or searching this concept. Over the years the INIS/ETDE Thesaurus has evolved as a result of systematic study and it contains over 30 000 terms. Using the Joint Thesaurus as a starting point, INIS, in cooperation with the Member States, has developed INIS Multilingual Thesaurus with navigation capabilities including the full thesaurus hierarchy. It is available in all official languages of the IAEA. It represents a unique multilingual thesaurus in the nuclear field and serves as a major tool for indexing and describing nuclear information and knowledge in a structured form, which assists in multilingual and semantic searches of the INIS Database."