Glossaries, Dictionaries and Encyclopedias
English Dictionaries
- Cambridge Dictionaries Online
- Oxford Dictionary of English (8th edition, 1990)
- Merriam-Webster Dictionary and Thesaurus
- Roget's II: The New Thesaurus (Third Edition, 1995)
- The Free Dictionary
- OneLook Dictionaries
- Dictionary.net
- Webster-Dictionary
- WordNet Vocabulary Helper
- InfoPlease: Online Dictionary and Encyclopedia
- The Biggest Online Text Dictionary
- The American Heritage Book of English Usage (1996)
- The Elements of Style, by W. Strunk
Biology and Medicine
- Dictionary of Cell Biology
- Glossary of Biochemistry and Molecular Biology
- Life Science Dictionary
- Time-Life Plant Encyclopedia
- Botany Online-Dictionary
- Microbial Genetics Glossary
- Glossary of Microbiology
- Topley Online: Microbiology and Microbial Infections
Computing, Mathematics and Statistics
- CRC Concise Encyclopedia of Mathematics: Eric Weisstein's world of mathematics. More than 9.000 entries
- Maths Thesaurus
- English-Finnish-Swedish Mathematics Dictionary
- Bilingual Mathematics Dictionary (Español-English)
- StatSoft: Electronic Statistics Dictionary
- A Glossary for Geometric Morphometrics
- Online Encyclopedia of Integer Sequences
- BABEL: A Glossary of Computer Oriented Abbreviations and Acronyms
- Tech-Encyclopedia:
More than 14.000 definitions of computer terms and concepts - Web Dictionary of Cybernetics and Systems
Technology, Toxicology and Chemistry
- Chemistry Encyclopedia
- Woordenboek Organische Chemie: English bruto formula list; English index; English-Dutch word list; German-English word list
- Abbreviations of Chemical Compounds
- CDF: Chemical Dictionary
- Toxicity Abbreviations
- Technical Terms Translation Table
- DOE Bioremediation Glossary
- An Agricultural and Environmental Biotechnology Annotated Dictionary
- AGROVOC Thesaurus (Food and Agriculture Organization)
Encyclopedias
- Encarta: Concise Free Encyclopedia
- Free Internet Encyclopedia
- Encyclopedia Smithsonian
- Encyclopedia.com: The Concise Columbia Electronic Encyclopedia (3rd edition)
- The Columbia Encyclopedia (Sixth Edition)
Miscellaneous
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