1)综合性辞典

OneLook Dictionaries550种线上辞典

yourDictionary.com超过800种线上辞典的链接

Online English Grammar线上英语语法书

Grammar Handbook由伊利诺大学提供英语语法手册

Acronyms and Abbreviations缩略语辞典

Acronym Finder缩略语词汇

Thesaurus.com同义词典

Bartleby.com:Great Book Online引用语辞典

French-English Dictionary法英辞典,收录75,000个词汇

German-English Dictionary德英辞典,收录超过18万词汇

Quoteland.com引用语辞典

Cambridge Dictionaries Online剑桥英语辞典

Foreign Languages for Travellers为游客提供70多种语言词汇对照,内容包括基本词汇、数字、购物、问路等

2)医学辞典

The On-line Medical Dictionary包括65,000个医学词汇

AIDS 101 Glossary艾滋病词汇

Glossary of Medical, Statistical, and Clinical Research Terminology医学词汇

Cancer Glossary癌症词汇

Diabetes Dictionary Index糖尿病辞典

Dictionary of Epidemiology流行病学辞典

HIV/AIDS GLOSSARY艾滋病词汇

Genetics Glossary: Human Genome Project Information遗传词汇

Hypermedia Glossary of Genetic Terms遗传学术语

MedicineNet: Medical Information on Diseases, Treatments.医学辞典

Traumatic Brain Injury Glossary脑外伤词汇

Online Medical & Science Dictionaries医学和科学辞典集

3)电脑辞典

Free Online Dictionary of Computing电脑辞典

Dictionary of PC Hardware and Data Communications Terms个人电脑与数据通讯辞典

Pocket Calculator袖珍计算器

PC Webopaedia联机电脑辞典

Tech Encyclopedia电脑及技术辞典,收录电脑及技术词语13,000多个

The Language List电脑程序语言辞典

Intelligent Database for Standard Chinese Computer Terminology计算机科学技术名词,英汉双语查询

4)科技辞典

Academic Press Dictionary of Science and Technology科技辞典,含十三万科技词汇

Dave's Math Tables数学运算表、公式等

A Dictionary of Units of Measurement单位换算辞典

Unit Converter20种单位换算表

Common Weights And Measures重量与单位换算

A Dictionary of Units基本单位换算辞典

Conversion Factors单位换算公式

Glossary of Nuclear Terms原子词汇

Glossary of Satellite Terms卫星词汇

Lexicon半导体词汇

Plasma Physics and Fusion Energy Research Glossary等离子物理词汇

9 Planets Glossary行星词汇

Aquarium Glossary水族馆词汇

Astronomy Thesaurus天文学词表

Bryological Glossary苔鲜学法、德、西班牙语词汇

Chemistry Science Dictionary English/German德英化学辞典

Acronyms Database缩略语词汇,重点收藏化学方面词汇

Bioenergy Glossary生物能源词汇

Biotechnology Dictionary生物技术术语解释

UCMP Glossary生物学术语词汇

Dictionary of Cell Biology细胞生物学辞典,收录五千多词汇

Biotechnology Dictionary生命科学与化学辞典

Houghton Mifflin Presents地质学词汇

Recycling Glossary循环利用词汇

SMU Glossary of Archaeological Terms考古学术语解释

Terrestrial Wind Energy Glossary风能词汇

Tropical Cyclone and Hurricane Glossary热带飓风词汇

Weather Glossary for Storm Spotters气象术语解释

Educational Outreach For Teachers气象术语

5)其他

Addictions & Life Page Drug Related Street Terms/Slang Words毒品术语和俚语

IPRC: Dictionary of Street Drug Slang Terms毒品俚语术语

Forestry Glossary of Terms, British Columbia林业词汇

GardenWeb Glossary of Botanical Terms园艺辞典

Find a Bird Dictionary Topic鸟类辞典

Winegrape Glossary葡萄酒术语解释

Epicurious Food Dictionary收录有关食品、酒类等名词词典

Food Lover's Glossary食品辞典

The Cook's Thesaurus食谱同义词典

Allergy Glossary食物过敏词汇

PhotoResource Glossary摄影词汇解释