Skip Navigation

Encyclopedias

A book or set of books giving information on many subjects or on many aspects of one subject and typically arranged alphabetically.


Encyclopedia.com Encyclopedia.com has more than 100 trusted sources, including encyclopedias, dictionaries, and thesauruses with facts, definitions, biographies, synonyms, pronunciation keys, word origins, and abbreviations.

Encyclopedia Britannica

Explore the updated online encyclopedia from Encyclopedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sites.