General
Acronym Finder: An online acronym and abbreviation finder.
Foreign Words: Translate from 69 source languages into 73 target languages.
Lexicool: Search 6000 online bilingual/multilingual dictionaries. Way cool.
MedSpeak: Medical terms.
Merriam Webster Online: Dictionary, thesaurus, Spanish-English dictionary.
Ninjawords: Absurdly fast look-up with list-making ability.
Onelook: Definitions for over 5 million words in over 900 online dictionaries.
Shorter Thesaurus: Type a long word, get back a short synonym.
Tip of my Tongue:Find the word you just can't think of right now.
VisuWords:Visual dictionary-synonyms, antonyms, definitions,all fun.
Word Origins: Devoted to the origins of words and phrases.
Specific
Art Lexicon: Definitions and acronyms relating to art.
Computer Terms: Definitions for current computer-related words.
Urban Dictionary: Up-to-the-minute slang.
