Merriam Webster Online Includes a dictionary, a medical dictionary , a Spanish-English dictionary and a thesaurus. Click on the sound icon to hear pronunciation.
Word CentralStudent Dictionary, thesaurus and rhyming dictionary. Play the word games.
One Look Dictionaries A search engine for words and phrases: searches through dictionaries on the web for definitions and translations. Assists with spelling of words.
Acronym Finder With more than 590,000 human-edited definitions, Acronym Finder is the world's largest and most comprehensive dictionary of acronyms, abbreviations, and initialisms.