Specific Subjects
Architecture and the Visual and Graphic Arts
- The Art and Architecture Thesaurus
- ArtLex - dictionary of visual art
- Art Movements and Periods
- Library of Congress Thesaurus for Graphic Materials I: Subject Terms (TGM I)
- Library of Congress Thesaurus for Graphic Materials II (TGM II)
- Words Of Art: An On-Line Glossary of Theory And Criticism for the Visual Arts
Astronomy
Biography
Biology
- BioTech's Life Science Dictionary - free, searchable online dictionary of biology, chemistry and biotechnology terms
- Cell and Molecular Biology Links
- Glossary of Genetic Terms
- Glossary of Microbiology
- Glossary of Molluscan Terminology
Business
Cognitive Science / Philosophy
Computing and Technology
- TechEncyclopedia
- Web Words - definitions of commonly used Internet terms
- For more, see the Technical Writing section under Non-Academic Writing.
Cooking / Culinary Arts
Engineering
Film
- IMDb Film Glossary - index is on the left panel
Geography
History / Genealogy
Law / Politics
- Jurisdictionary - legal terms and advice
- Political Dictionary
Literature / Religion
- Dictionary of Phrase and Fable
- A Glossary of Literary Terms - by Robert Harris
Mathematics
Medicine
- Medical/Surgical Word Glossary - FDA approved drugs, devices, surgical/medical instruments, and procedures
- MedicineNet
- On-Line Medical Dictionary
Music
Rhetoric
- The Forest of Rhetoric - guide to the terms of classical and renaissance rhetoric
- Rhetorical Figures - glossary of rhetorical terms with examples
Sport and Leisure