| Skeptic's Dictionary Skeptical definitions and essays on occult, paranormal, supernatural and pseudoscientific ideas and practices with references to the best skeptical literature. http://www.skepdic.com/ |
| TechDictionary Computer and technology terms, acronyms, chat abbreviations, filename extensions, and emoticons. http://www.techdictionary.com/ |
| The Free Dictionary provides English, medical, legal, and computer dictionaries as well as a thesaurus, encyclopedia, and literature reference library. http://www.thefreedictionary.com/ |
| The Glossarist Searchable directory of glossaries and topical dictionaries containing terms and definitions on hundreds of subjects. http://www.glossarist.com/ |
| VoyCabulary makes the words on any webpage into links so you can look them up in a dictionary or other reference site, by simply clicking on the words. http://www.voycabulary.com/ |
| WebRef.org providing glossaries of terms related to various scientific disciplines, aesthetic arts, and biographical information. http://www.webref.org/ |
| Wiktionary collaborative project to produce a free multilingual dictionary in every language, with meanings, etymologies and pronunciations. http://www.wiktionary.org/ |
| Word Central Student dictionary and rhyming dictionary online at Merriam-Webster's website. Daily Buzzword by subscription. http://www.wordcentral.com/ |
| Word Spy Site dedicated to recently coined words and existing words revived into modern usage. http://www.wordspy.com/ |
| Wordsmyth Educational Dictionary-Thesaurus American English dictionary with an integrated thesaurus and other lexical resources. http://www.wordsmyth.net/ |