Roget's Thesaurus

"Roget's Thesaurus is composed of six primary classes. (...) Each class is composed of multiple divisions and then sections. This may be conceptualized as a tree containing over a thousand branches for individual 'meaning clusters' or semantically linked words. Although these words are not strictly synonyms, they can be viewed as colours or connotations of a meaning or as a spectrum of a concept. One of the most general words is chosen to typify the spectrum as its headword, which labels the whole group.


"The GeoNames geographical database is available for download free of charge under a creative commons attribution license. It contains over 10 million geographical names and consists of over 9 million unique features whereof 2.8 million populated places and 5.5 million alternate names. All features are categorized into one out of nine feature classes and further subcategorized into one out of 645 feature codes. (...) The data is accessible free of charge through a number of webservices and a daily database export.

Classification of the Literature of Freemasonry and Related Societies

"The Masonic Classification herewith presented is the result of some twenty-two years of practical experience in the largest masonic library in the world — the Library of the Supreme Council, 33rd Degree at Washington. This Library, in addition to its thousands of items on Freemasonry and related societies, contains also thousands upon thousands of general works in all branches of literature.

Sygehusvæsnets Klassifikationssystem

"Sygehusvæsnets Klassifikationssystem (SKS) består af flere tusinde koder, som anvendes til at levere struktureret information til forskellige informationssystemer. Koderne spænder over et meget bredt spekter, og at finde lige netop dén kode, som nøjagtigt afspejler en given hændelse eller tilstand, er ikke altid en triviel opgave. Derfor har vi lavet nogle online-værktøjer - de er langt fra perfekte, men dog forhåbentlig en hjælp. Alle værktøjerne er baseret på en online database, som kun indeholder gældende SKS- og SHAK-koder.

Glossary of Forest Terminology

"This forest terminology largely follows that contained in the British Commonwealth Forest Terminology, or the Forest Terminology of the Society of American Foresters. Where these references have not been in agreement, the definition more suitable to the condition in Ontario has been used. Certain terms in this glossary either are not found in, or are not in agreement with, these texts. Such terms are marked with an asterisk."

Army Medical Library Classification Medicine

"The Classification covers the field of medicine and its related sciences. With it are used the various schedules of the Library of Congress Classification in order to provide an orderly arrangement for subjects bordering on medicine and for non-medical reference books. The LC schedules are used extensively; for example, social questions relating to the blind and the deaf are classified in HV (Social Sciences). When classification according to the LC schedules is indicated, only the class letters have been furnished in the present index.

Standard Air Pollution Classification Network: a Thesaurus of Terms

"The purpose of this thesaurus, is to present the special standardized terminology used for the storage of, and search for, information in the APTIG file. This second edition consists of this standardized terminology and illustrates the rules formulated for its use. The thesaurus should control the terminology and enable any inconsistencies to be resolved when indexers or searchers translate from the language of each document, or search request, into the conceptual system language presented here."