The online version of McGraw-Hill Encyclopedia of Science & Technology and the McGraw-Hill Dictionary of Scientific and Technical Terms. Contains more than 8,000 articles written by the leading figures in their fields – including 30 Nobel Prize winners – edited and illustrated with the non-specialist in mind.

American Sign Language Browser

Using Quicktime movie software, Michigan State University has created a dictionary of thousands of ASL signs. To see an ASL sign demonstrated, choose the sign you want from a list of nearly 30 such lists, then watch the 100K movie.

Brewer’s Dictionary of Modern Phrase and Fable

The New Grove Dictionary of Music and Musicians

Available in print and online versions.

Merriam Webster’s Dictionary

M-W Dictionary has a neat audio pronunciation feature.

Oxford Classical Dictionary from the Oxford Reference Shelf

A reference work on all aspects of the Graeco-Roman world. Dictionary provides coverage of Greek and Roman history, literature, myth, religion, linguistics, philosophy, law, science, art and archaeology, and topics in near eastern studies and late antiquity.

The Oxford Dictionary of the Christian Church, 3rd edition revised

The Oxford Dictionary of the Middle Ages

The Oxford Dictionary of Music

Oxford Dictionary of the Renaissance

Provides rich detail on all aspects of the Renaissance in 14th to 17th century Europe. Includes comprehensive coverage of the art, literature, science, culture, philosophy, religion, economics, history, and conflict of the period. The text explores the influence that this intense intellectual and cultural revival continues to have on modern thought and society. Nearly half the entries are biographical, covering artists, thinkers, statesman, and reformers. A table of European ruling houses and a table showing the dates when cities and countries changed from the Julian to the Gregorian calendar are also included.

Oxford English Dictionary

Oxford Reference Online

This resource brings together 100 language and subject dictionaries and reference works – containing well over 60,000 pages – into a single cross-searchable resource.

Roget’s International Thesaurus

Peter Roget’s classic structure coupled with Mawson’s modernization becomes even more user-friendly on Bartleby.com with 85,000 hyperlinked cross-references. Additionally, over 2,900 proverbs and quotations from classic and modern authors illustrate the 1,000-plus entries.


Paul McFedries, president of Logophilia Ltd. (a technical writing company) compiles new words, old words used in new ways and more in his glossary. Each entry lists the meaning of the word, example citation, and an earliest citation (the first time it was used in the media).