Pure Science

Convention on Biological Diversity Controlled Vocabulary

"It facilitates searching and retrieving information by linking similar documents and on-line resources with unique terms. It standardizes descriptions, and so assists in efforts to make information interoperable. Because most terms are taken from official Convention documents, UNEP's ENVOC, and FAO’s AGROVOC, the translation of these terms is facilitated. The CBD Controlled Vocabulary was developed in 2003 with the intent to establish a list of terms to be used as descriptors (i.e. metadata) for CBD documents and web pages."

E.V. Komarek Fire Ecology Thesaurus

"The Thesaurus contains scope notes and cross references that explain the indexing system with its use of broad, narrow, and related subject terms. The Tall Timbers Fire Ecology Thesaurus is the tool created by the library for indexing database records. A list of words or phrases (i.e., keywords) that are used to describe topics covered by citations listed in the Tall Timbers Fire Ecology Database."


"Comprehensive and polyhierarchically structured, Emtree provides a consistent description of all biomedical terminology, allowing unrivaled drug and disease indexing.

U.S. Geological Survey Thesaurus

"The USGS Thesaurus is the principal controlled vocabulary supporting Science Topics. It is designed as a formal thesaurus conforming to ANSI/NISO Z39.19, with rigid adherence to the hierarchical (BT, NT) term relationships, generic non-hierarchical (RT) relationships, and lead-in term relationships linking non-preferred terms to descriptors either singly (UF) or in a compound USE-WITH relationship. The thesaurus is faceted, meaning its top terms delineate general aspects of information resources: Sciences: Major educational fields, fields of study, and professional groupings within USGS.

Radiation Chemistry Data Center Thesaurus

"The indexing terms listed in the thesaurus are those found in the RCDC Bibliographic Data Base and therefore are the terms used to generate the keyword index in this volume. The keywords are arranged alphabetically. Numbers, dashes, parentheses and super- and sub-scripts are ignored in ordering the terms except when required to distinguish two terms. Thus, '1-propanol' precedes '2-propanol' (following 'propane') and 'H2O+' precedes 'H2O-' and 'H2O2+' (all three precede 'hole'). Arrangement is word by word, thus 'hole traps' precedes 'holes'.

SEMIDE Thesaurus

"EMWIS is an initiative of the Euro-Mediterranean Partnership. It provides a strategic tool for exchanging information and knowledge in the water sector between and within the Euro Mediterranean partnership countries. All the countries involved in the Euro-Mediterranean Partnership are concerned: The 27 EU member states; The 10 Mediterranean Partner Countries (Algeria, Egypt, Israel, Jordan, Lebanon, Morocco, Palestine, Syria, Tunisia and Turkey). At the conference of the Euro-Med Water Directors (Rome, Nov.