NASA Thesaurus:
National Aeronautics and Space Administration Thesaurus. Extensive
coverage of scientific terms.
http://www.sti.nasa.gov/nasa-thesaurus.html
The Astronomy Thesaurus:
Astronomical terms. Searches may be performed in English, French,
German, Italian, and Spanish.
http://msowww.anu.edu.au/library/thesaurus
CAS General Subject Vocabulary Helper:
Extensive listings for chemistry. Produced by Chemical Abstracts
Service, a division of the American Chemical Society.
http://www.cas.org/vocabulary/index.html
Maths Thesaurus:
Definitions of common mathematical terms, along with broader,
narrower, and related concepts.
http://thesaurus.maths.org/
Babynames Thesaurus:
You can search for a name from its meanings. The site has more than
10,000 names with meanings.
http://www.yourbabysname.com/thesaurus.htm
Art and Architecture Thesaurus:
Getty's terms, as used in several AAT indexes.
http://www.getty.edu/research/tools/vocabulary/aat/
Eurodic Autom:
European Union terminology. Available on most European Union
languages.
http://europa.eu.int/eurodicautom/login.jsp
Library of Congress Thesauri:
Links to multiple LOC thesauri, including GLIN, the Global Legal
Information Network.
http://www.loc.gov/lexico/servlet/lexico
Alcohol and Other Drug Thesaurus - AOD:
National Institutes of Health thesaurus. Provides resource for
medical, social, and demographic terms related to alcohol and drug
use.
http://etoh.niaaa.nih.gov/AODVol1/Aodthome.htm
Thesaurus of Musical Instruments:
Over a thousand instruments, with relational links based on the
Library of Congress Subject Headings.
http://web.simmons.edu/~jenkink3/instruments/
ASIS Thesaurus of Information Science:
Hierarchical and alphabetical interface to library-related terms.
http://www.asis.org/Publications/Thesaurus/isframe.htm