Web version of this popular dictionary...

Historical dictionary of the English language (from the Middle Ages to the present) that gives definitions of words at specific times in history...

Contains 20,000 terms with contextual definitions, along with6,000 full-color images that illustrate all aspects of life...

Online database of acronyms, which may be searched either by acronym or by the word(s) represented by an acronym...

Dictionary of the origins of words and phrases, with over 18,000 entries that reveal the etymologies, trace the origins and otherwise catalog words with a tale to tell...

Abridged dictionary of English, containing about 240,000 entries...

Contains more than 17,000 entries on the origin and development of English words...

Explanations for commonly used symbolism in literature...

Full text access to some of the essential dictionaries and thesaurii dealing with the English language...

Full text access to some of the essential reference works in English language grammar and usage, published by the Oxford University Press...

This companion DVD to The Gallaudet Dictionary of American Sign Language is available for viewing by clicking on the provided link...

Database for nearly 2 million physical and cultural features in the United States, census information for 98,000 local areas and distance calculations for 177,000 populated places...

Enter a word or phrase and receive a list of anagrams for that word or phrase...

Searchable and browseable online dictionary and thesaurus for English, including audio pronunciation, etymologies, and occasional illustrations...

Online dictionary to which anyone can submit new words and definitions (or new definitions for old words)...

Dictionary of "the names, phrases, events, and other items that are familiar to most literate Americans...

Dictionary of eponyms, words that are derived from the names of individuals, such as Fahrenheit from the name of the man who invented the thermometer...

Second edition (2006) of a standard dictionary of the English language...

A dictionary that let's you find a word by entering words that describe it; you will get back a list of words and phrases related to that concept...

Dictionary that describes the origins of English language words...

Contains more than "175,000 words, phrases, and definitions...

Contains "more than 15,000 main entries keyed to over 350,000 synonyms, with accompanying example sentences and phrases...

Contains more than 5,000 entries for "idiomatic phrases and sayings that make English the rich and intriguing language that it is...

Contains almost 8000 entries covering "stories behind names and sayings that can be found in classic literature or today's news...

Contains 2400 of "the best-known proverbs in the English language from around the world...

"Contains rhymes for 45,000 words, including proper names, place names, and foreign terms used in English...

Contains more than 8,000 foreign words and phrases used by English speakers...

A collection of more than 175 dictionaries and encyclopedias from Oxford University Press...

An online encyclopedia and dictionary with detailed explanations of computer and Internet terms, with links to additional resources...

An online "14,000-word dictionary of obscure and rare words, the International House of Logorrhea, as well as many topical word lists and other English language resources...