| 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. |
| Alcwin.org: Site listing several types of dictionaries related to the sciences. |
| ArtLex: Dictionary of visual art defines more than 3,500 art-related terms. Also includes a comprehensive collection of artwork and famous quotes. |
| Biographical Dictionary: Read about more than 28,000 notable men and women from history. Search by names, dates, professions, achievements, and more. |
| Churchman Dictionary: Lookup a definition in the search bar or by first letter. Includes a "word of the day". |
| Dictionary.com: Online English dictionary, thesaurus and reference guide. Includes word games, online translator, and word of the day feature. |
| DinoDictionary.com: Features profiles of over 300 known dinosaurs along with pronunciations of their names. |
| eLook Dictionary: Provides definitions, synonyms, and related words. |
| Fact Monster: An online dictionary with definitions of more than 125,000 words. |
| Free On-line Dictionary of Computing: A searchable dictionary of terms from computing and related fields. |
| Ice Phoenix Vocab Project: Downloadable program that looks up entire lists of vocabulary words. |
| InfoVisual: Thematic visual dictionary that focuses on learning through images. Concise definitions within the fields of vegetal biology, animal biology, human anatomy, and transportation. |
| Little Explorers: Picture dictionary gives definitions, pictures, and Internet links for over 2,350 entries. Includes translations for English to and from Dutch, French, Spanish, and more. |
| MSN Encarta Dictionary: Online dictionary with over 100,000 entries, definitions, and pronunciations. |
| NetLingo Dictionary: Provides a glossary of Internet jargon and acronyms. |
| OneLook Dictionary Search: Type in a word and search many dictionaries at once. Also has a reverse dictionary and translations. |
| Pidic.com: An online picture dictionary with thousands of images |
| PSEUDOdictionary: Defines everyday words including slang, webspeak, and colloquialisms. |
| RhymeZone: Online rhyming dictionary. Search for a word and get a list of potential words that rhyme in addition to a definition. |
| 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. |
| WebDictionary.co.uk: Online dictionary and reference website. |
| Webopedia: Definitions of many computer-related terms, from hardware to the internet. |
| wordIQ: Search on several different dictionaries, an encyclopedia, and the web. |
| Wordsmyth: A dictionary and thesaurus in one. Also gives parts of speech and examples for more than 50,000 words. |
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