Oxford English Dictionary The most comprehensive dictionary of the English language. Good for tracing the history of words and finding definitions for antiquated or obscure words.
iTools Search for definitions of terms in English, including specialized techincal terms. Also provides a thesaurus and computer translation services.
OneLook Dictionaries Search a plethora of online dictionaries for definitions and/or translations of terms.
English Language Dictionaries A listing of print dictionaries in our collection that provide definitions of English words.