A Dictionary of Scientific Quotations
A Dictionary of Universally Used Fencing Terminology
A+ Materials Science and Engineering Glossary of Terms
Academic Press Dictionary of Science and Technology
AGI GIS Dictionary
Algorithms, Data Structures, and Problems - terms and definitions of algorithms, data structures, and classical problems in sorting, searching, combinatorics, graphs, and more.
All Music Guide (AMG) - encyclopedic database of music. Includes artist biographies, album reviews, and fully cross-referenced discographies that allow the user to browse from artist to artist.
Amateur Telescope Making Dictionary - words in nine languages: English, French, German, Dutch, Portuguese, Spanish, Indonesian, Italian, and Russian. Definitions in English.
American Business Jargon Dictionary
American Medical Association Medical Glossary - get definitions of medical terms.
Art Movements and Periods
ArtLex - a dictionary of art terminology, especially for art students elementary through undergraduate.
Austin Symphony: Online Music Dictionary - a glossary of popular music terms.
Biographical Dictionary
BioTech's Biotechnology Dictionary - free, searchable online dictionary of biology, chemistry and biotechnology terms.
BioTech's Life Science Dictionary
Blues Language - offers a dictionary of words and phrases.
Cancer Glossary
Chemistry & Environmental Dictionary - provides definitions for technical terms and acronyms, and related articles.
Classical Music Dictionary - provides sound files and information on composers.
Common Music Dictionary - defines most of the public interface to Common Music scripting.
Comparative CyberLexicon - a compilation of English terminology peculiar to computer culture and technology and its equivalents in Spanish.
Computer Concepts - comprehensive reference and animated instructional guide for common buzz words and the most popular computer concepts.
Computer Currents On-line Dictionary - searchable glossary of computer and Internet words, acronyms, and abbreviations.
Computer Words - defines common terms and concepts for non-technical people.
Computing Dictionary
Diabetes Dictionary (1)
Diabetes Dictionary (2)
Diccionario de Términos Informáticos - dictionary of computer terms from English to Spanish.
Dictionary of Cell Biology
Dictionary of Computing
Dictionary of Mountain Bike Slang
Dictionary of Music Terms - a list of music terms and their definitions provided by the music department of Contra Costa College in California.
Dictionary of Occupational Titles (DOT) Index
Dictionary of PC Hardware and Data Comm. Terms - includes the ability to search online or to order the actual book.
Dictionary of Philosophical Terms and Names
Dictionary of Philosophy of Mind - dictionary for those terms commonly used, defined, contested, and misunderstood in the philosophy of mind. Free service, submissions welcome.
Dictionary of Phrase and Fable
Dictionary of Units, A - an explanation of the principle systems of units, their history, standards, and conversion factors for changing from one to the other.
Dictionary of Useful Research Phrases
Digital Media Knowledge Base - includes definitions, illustrations, standards, and tutorials.
Dizionari DADA
DOD Dictionary of Military and Associated Terms
Earth Words for Internet Citizens
FOLDOC
Free On-line Dictionary of Computing
Genomics Lexicon - database of terms and definitions used in the study of genetics.
GIS Dictionary - includes definitions for terms which either relate directly to GIS or which GIS users may come across in the course of their work.
Glossary of Botanical Terms - interactive glossary of terms relating to botany, gardening, horticulture and landscape architecture.
Glossary of Genetic Terms
Glossary of Microbiology - searchable database providing brief definitions with links.
Glossary of Molluscan Terminology
Glossary of PC & Internet Terminology - terms & acronyms used for personal computing & the Internet. Definitions included.
Glossary of Sailing Terms
Glossary of Satellite Terms
Glossary of Some Common Terms in Seismology
Glossary of Space Terms - from the NASA Jet Propulsion Laboratory.
Grove Dictionary of Art Online - subscription service including the complete, fully searchable text with images.
Hypertext Glossary of Genetic Terms - searchable database of genetic terms with hypertext cross references and pictures.
Hypertext Handbook - acronyms, techno-babble, and internet/webisms - deciphered.
Illustrated Dictionary of Jewelry
Illustrated Glossary of Geologic Terms
Infomedical - dictionary of on-line medical resources.
Internet and Unix Dictionary
Jane's Internet Defence Glossary
Jargon Scout - an irregular feature that aims to give advance warning of jargon that is just about ready to hatch into the Net's language.
Jurisdictionary
Kaiser Permanente's Medical Glossary
Ken's Dictionary of Computer Standards - An independent attempt to codify defacto and unwritten computer industry standards.
Klassische Musik Karadar Bertoldi Ensemble
Lexicon of Semiconductor Terms, Abbreviations and Acronyms - semiconductor terms defined: programs, processes, products, and technologies.
List and Glossary of Medical Terms - in several European languages.
Management and Technology Dictionary
Mathematical Programming Glossary - glossary of terms (plus supplements) used in optimization.
Medical/Surgical Word Glossary - FDA approved drugs, devices, surgical/medical instruments, and procedures.
Medieval Glossary
Medizinisches Wörterbuch
Medspeak - dictionary of medical terms used, plus reviews of the accuracy of the medical content of the episodes.
MedTerms.com Medical Dictionary
Movie Terminology Glossary
Music Dictionary - provides definitions and explanations of musical terms.
Music For The Mind - music dictionary.
Musical Heritage Network Instrument Encyclopedia - search for the instrument of your choice or browse through the collection by the Sachs-Hornbostel classification scheme or by geographical origin.
net lingo
Netmeg Internet - The Jargon Dictionary
On-line Medical Dictionary - OMD is a searchable dictionary of terms relating to biochemistry, biology, chemistry, medicine, molecular biology, physics, plant biology, radiobiology, zoology, science and technology.
Online Film Dictionary
Online Music Dictionary
Opera Terms - includes sound files.
Operas and Their Composers: A Pronouncing Dictionary - approximately 100 names of operas and their composers with attached sound files that provide their correct pronunciation.
Photonics Dictionary
Pimbley's Dictionary of Heraldry
Plant Pathology Dictionaries and Lexica
Poker Dictionary
Poker Glossary
Political Dictionary
Rap Dictionary, The - definitions of hip hop terminology. Also includes a comprehensive list of artists' real names.
Samuel Adams Beer Dictionary
Science Terms: Distinctions, Restrictions, and Confusions - discussion of familiar words that have specific or specialized meanings in science, and scientific terms that are easy to confuse. From The American Heritage Book of English Usage.
Technical Glossary
TechWeb Technology Encyclopedia - over 11,000 definitions of computer and technology terms and concepts.
TekMom's Technology Buzzwords for Students
Totally Unofficial Rap Dictionary
U-Geek Glossary Search
University of Alberta Cognitive Science Dictionary
Visionary - a dictionary for the study of human and animal vision, including terms from biological and machine vision, visual psychophysics, visual neuroscience, and other related fields.
Visual Dictionary of Special Plane Curves - including description, history, formulas, properties, and links for each.
Web Directory: Dictionaries and Unit Conversion for Engineers
Wind Energy Conversion Systems Glossary
Wing Chun Kuen Dictionary
Words of Art: An On-line Glossary of Theory and Criticism for the Visual Arts