Acronyms, abbreviations and trademarks
- Internet Acronym Server
- List of acronyms and abbreviations in the Network Acronym and Abbreviation Server at iruccvax.ucc.ie, which is also available by e-mail for those without direct Internet or W3 browser access.
- Acronym Finder
- A searchable database containing more than 162,000 common acronyms, abbreviations, and initialisms about all subjects, including information technology, telecommunications, military, government, and much more.
- International Trademark Association (INTA)
- Includes: "Trademark Basics: A Guide for Business" (brochure that introduces the fundamentals of trademark selection, registration and maintenance), "Trademarks: The Official Media Guide" (basic guidelines for the proper use of trademarks), and the "INTA Trademark Checklist" (a list of nearly 4,000 trademark and service marks with their generic terms and indicates capitalization and punctuation).
- Official Postal Abbreviations (US Postal Service)
Computer and Internet terms
- CNET Internet Glossary
- O'Reilly Advanced Search: Dictionary of PC Hardware and Data Comm. Terms
- Free On-line Dictionary of Computing
- ILC Glossary of Internet Terms
- Sun Glossary of Java-related Terms
- Web Dictionary of Cybernetics and Systems
Dictionaries and thesauruses
- An excellent collection of links to dictionaries for 85 languages, as well as thesaurusi and other vocabulary aids, multilingual dictionaries, specialized dictionaries -- including Middle English, the Etymological Dictionary of Carnivorous Plants, and the unofficial rap dictionary, to name just a few -- and an index of dictionary indices.
- American/British - British/American Dictionary
- The definitions in this dictionary concentrate on the differences in American and British English, such as a different word for the same thing, or the same word used for different things.
- American Heritage Dictionary of the English Language (Fourth Edition)
- Published online as part of the Bartleby Project, the American Heritage Dictionary contains over 90,000 entries, featuring 10,000 new words and senses, 70,000 audio word pronunciations, 900 full-page colour illustrations, language notes and word-root appendixes.
- Astronomy Thesaurus
- Bookbinding and the Conservation of Books: A Dictionary of Descriptive Terminology
- Dictionary of American Regional English
- EURODICAUTOM is an electronic dictionary with the terminology, abbreviations, and acronyms used by the European Institutions. The database includes all the official languages of the European Union, and the Latin for scientific nomenclature when necessary. EURODICAUTOM has more than 4,5 millions terms and abbreviation in all the languages.
- Merriam-Webster Online
- OneLook Dictionaries, The Faster Finder
- Online Medical Dictionary
- Oxford English Dictionary Online
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- The Anagram Link Page
- Bartlett's Quotations
- Books about Canadian Words by Bill Casselman
- I am the author of 9 books about the origins of Canadian words and Canadian folk sayings. Editors may query me gratis concerning the origins and roots of Canadianisms.
- Cliche Finder
- Dictionary of Dance
- Etymologic: The Toughest Word Game on the Net
- Jesse's Word of the Day
- Ever come across a word that doesn't mean what you thought it did? Or just wonder what a "deipnosophist" is? Send your questions about words, grammar, or usage to firstname.lastname@example.org and they'll be answered in this space. Jesse Sheidlower is a senior editor in the Reference division of Random House, where he specializes in slang and new words.
- Ka-BOOM! A Dictionary of Comicbook Words on Historical Principles
- Lexical FreeNet
- This program allows you to search for rhymes and relationships between words and concepts that might never have occurred to you.
- RhymeZone rhyming dictionary and thesaurus
- Richard Lederer's Verbivore
- "The web site woven for wordaholics, logolepts, and verbivores. Carnivores eat meat; herbivores eat plants and vegetables; verbivores devour words. If you are heels over head (as well as head over heels) in love with words, tarry here awhile to graze or, perhaps, feast on the English language. Ours is the only language in which you drive in a parkway and park in a driveway and night falls but never breaks and day breaks but never falls."
- Word Detective
- WordNet is an online lexical reference system whose design is inspired by current psycholinguistic theories of human lexical memory. English nouns, verbs, adjectives and adverbs are organized into synonym sets, each representing one underlying lexical concept. Different relations link the synonym sets.