Virtual Library
Dictionaries

English

OneLook Dictionaries	English Dictionary
Roget's Thesaurus	A Web of On-line Dictionaries
WWWebster Dictionary	Dictionaries & Thesauri
MacquarieNet -	Know Play
American Heritage Dictionary	Cambridge Dictionaries
Dictionary.com	World English Dictionary
yourDictionary.com	HyperDictionary
Meanings & origins of phrases

Science and technology 

BioTech Life Science Dictionary	The Glossarist
Dictionary of Computing	Glossary of Nuclear Terms
Biology 0n-line

Miscellaneous

Acronym Finder	Acronyms and Abbreviations
Acronym and Abbreviation Server	Brewer's Dictionary of Phrase & Fable

Languages other than English

Foreign Languages for Travelers	French-English Dictionary
German-English Dictionary

Japanese 

Jim Breen's WWWJDIC

Jeffrey's Japanese- English Dictionary

Chinese

Chinese-English Dictionary

Chinese Character Dictionary