Biographical Dictionary
Read about more than 28,000 notable men and women from history. Search by names, dates, professions, achievements, and more.
Ice Phoenix Vocab Project
Downloadable program that looks up entire lists of vocabulary words.
PSEUDOdictionary
Defines everyday words including slang, webspeak, and colloquialisms.
Realdictionary.com
Features search to locate words by initial letters and numbers.
Tech Terms Computer Dictionary
A searchable dictionary of computer terms with definitions explained in simple language.
Terminology Collection: Online Dictionaries
Glossaries for several languages and for specialized fields from the University of Vaasa, Finland.
The American Heritage Dictionary of the English Language
Contains over 90,000 entries, including 70,000 audio word pronunciations.
The Internet Picture Dictionary
Free, online multilingual picture dictionary with interactive activities for English, French, German, Spanish, Italian and ESL learners.
The Skeptic's Dictionary
Definitions and essays on occult, paranormal, and supernatural ideas and practices from the point of view of someone who is a sceptic, that is, does not believe in these things.
WordCentral.com
Merriam-Webster's site for kids has a student dictionary, Daily Buzzword, and interactive word games. Includes homework help and lesson plans for parents and teachers.