English language
Oxford English Dictionary
Electronic full text version of the most complete historical dictionary of the English language. Gives citations of the first instances of word usage in English literature
Credo Reference
Search English language dictionaries
ALLwords.com
English dictionary with multi-lingual search capability.
Merriam-Webster's Dictionary
New Oxford American Dictionary
REF PE 1628 .N429 2005
Roget's Thesaurus
The online version of the well-known book of synonyms and similar words.
Other languages
Credo Reference - Bilingual Dictionaries
Search bilingual French, German, Irish, Italian, Latin, Polish, Portuguese, Spanish, and Welsh dictionaries.
Web of Online Dictionaries
An exceptional site sponsored by Bucknell University. Links to dictionaries of many diverse languages
Chinese
McGraw-Hill's Chinese Dictionary and Guide to 20,000 Essential Words
REF PL 1455 .H7957 2010
Oxford Beginner's Chinese Dictionary
REF PL 1455 .O925 2006
French
Collins French Dictionary
Oxford Hachette French Dictionary
REF PC 2640 .O83 2007
German
Collins German Dictionary
Oxford Duden German Dictionary
REF PF 3640 .O94 2005
Greek (ancient)
Greek-English Lexicon
REF PA 445 .E5 L6 1996
Italian
Collins Italian Dictionary
Oxford Paravia Italian Dictionary
REF PC 1640 .O95 2006
Japanese
Basic Japanese-English Dictionary 2d ed.
REF PL 679 .B37 2004
Latin
Collins Latin Dictionary
Cassell's Latin Dictionary
REF PA 2365 .E5 1977
Elementary Latin Dictionary
REF PA 2365.E5 L72 1997
Spanish
Collins Spanish Dictionary
Oxford Spanish Dictionary
REF PC 4640 .O948 2008
Diccionario Real Academia Espanola