Here are some major English online dictionaries:
Longman Dictionary of Contemporary English Online - my all time favorite
Compact Oxford English Dictionary - Passionate about language!
Cambridge Dictionaries Online - five English dictionaries and one-stop sollution
Merriam-Webster Online Dictionary & Online Thesarus
Collins Word Exchange Dictionary,English Dictionary & Texting Dictionary
More online dictionaries:
American Heritage Dictionary of English Usage
One Look Dictionary Search
MSN Encarta Online Dictionary
Dictionary.com
thefreedictionary.com
Dictionary.net
yourdictionary.com
The Alpha Dictionary Site
VoyCabulary.com
Wordreference.com
New Bury House Dictionary of Ameican English
Wordsmyth Dictionary
WordCentral Dictionary
Century Dictionary
Thesauruses
Thesaurus.com
The Visual Thesaurus
Roget's Thesaurus
Online Dictionary of Antonyms
Hyperdict Dictionary of Anytonyms
Online Rhyming Dictionaries
RhymeZone
Rhymer.com
poetry4kids.com
American-British English Dictionaries
The American·British Dictionary
The English to American English Dictionary
Online Encyclopedias
Columbia Encyclopedia
encyclopedia.com
Prober Encyclopedia
Wikipedia
Encyclopedia Britannica
Infoplease Encyclopedia
answers.com
1911 edition Encyclopedia
Online Computer Dictionries
Webopedia.com
FOLDOC
Biographical Dictionaries
Biographical Dictionary
Biography.com
Children's Dictionaries
Picture Dictionary For Children
Wordsmyth Children's Dictinonary
Fact Monster
Online Quotation Dictionaries
QuotationReference.com
Simpson's Contemporary Quotations
Online Etymology Dictionary
Bartleby.com
Online Etymology Dictionary
Bartleby Reference
Online Slang Dictionaries
The Online Slang Dictionary
Slangsite.com
Dictionary of English Slang and Colloquialisms of UK
Urbandictionary.com
Australian Slang
Slang Dictionary
London Slang
Hardboiled Slang
College Slang Research Project
Slang Link Bank
Translation Dictionaries
中国译典 －China Translation Dictionary
金山词霸-
Kingsoft Online Dict
Cliche Dictionaries
The Book of Cliches
Cliche Finder
Latin to English Dictionary
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双子同声传译工作室
China Gemini Translation Services
www.chinagemini.com
