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This "dictionary has two halves: American to British, where the explanation and definitions of American words are in British, and British to American, where British words are explained in American terminology and spellings."

Hypertext version links relevant points in the text to other authoritative Web resources.

"The Dictionary of Old English was conceived by Angus Cameron, its founding editor, as an historical dictionary in the tradition established by Sir James Murray for the Oxford English Dictionary. The Dictionary of Old English is based on records written in English between 600 and 1150 A.D."

Dictionary.com is a multi-source dictionary search service that also provides links to a thesaurus, encyclopedia and web search service.

Basic vocabulary practice in English, French, German, Italian and Spanish.

Search for relationships between words, concepts, and people in this combination thesaurus, rhyming dictionary, pun generator, and concept navigator.

Look up words in Merriam-Webster's Collegiate Dictionary or Thesaurus.

A dictionary of mostly Internet-related terms

"The basic sources of this work are Weekley's 'An Etymological Dictionary of Modern English,' Klein's 'A Comprehensive Etymological Dictionary of the English Language,' 'Oxford English Dictionary' (second edition), 'Barnhart Dictionary of Etymology,' Kluge's 'Etymologisches Worterbuch der Englischen Sprache,' Ayto's '20th Century Words,' and Chapman's 1Dictionary of American Slang.' "

An online dictionary and search engine for computer and Internet technology.