There are many online website dictionaries. These website dictionaries are quite easy to use and they have a huge collection of information. Some of these dictionaries are also dedicated to a specific topic. For example some of the dictionaries are medical dictionaries.
We have provided a list of the best online dictionaries here. If you are in a particular field, medical or programming or Internet and you are looking for a particular word commonly used in that field, then you can find it’s meaning using the dictionaries provided here.
These dictionaries are also useful if you have to look up the meaning of a particular word and know its pronunciation when you do not have your own physical dictionary with you.
Merriam-Webster Online
Merriam-Webster provides a free online dictionary, thesaurus, audio pronunciations, Word of the Day, word games, and other English language resources.
Dictionary.com
This is a free online English dictionary, thesaurus and reference guide, crossword puzzles and other word games, online translator and Word of the Day.
American Heritage Dictionary
Over 90,000 entries feature 10,000 new words and senses, 70,000 audio word pronunciations, 900 full-page color illustrations, language notes and word-root appendixes.
RhymeZone
A language arts reference tool and comprehensive search engine for words. Includes the functions of a rhyming dictionary, thesaurus, and spelling checker, as well as an integrated full-text search engine for all of Shakespeare's works and thousands of quotations and poems."
On-Line Medical Dictionary
OMD is a searchable dictionary created by Dr. Graham Dark and contains terms relating to biochemistry, cell biology, chemistry, medicine, molecular biology, physics, plant biology, radiobiology, science and technology. It includes: acronyms, jargon, theory, conventions, standards, institutions, projects, eponyms, history, in fact anything to do with medicine or science.
MedTerms Medical Dictionary
MedTerms online medical dictionary is the medical reference for MedicineNet.com, containing easy-to-understand explanations of over 10,000 medical terms. This online medical dictionary provides quick access to hard-to-spell medical definitions through an extensive alphabetical listing.
ArtLex Art Dictionary
You'll find definitions for more than 3,500 terms used in discussing visual culture, along with thousands of supporting images, pronunciation notes, great quotations and cross-references.
Webopedia
An online computer dictionary and internet search engine for computer and Internet technology definitions.
Dictionary of Algorithms and Data Structures
This is a dictionary of algorithms, algorithmic techniques, data structures, archetypical problems, and related definitions. Algorithms include common functions, such as Ackermann's function. Problems include traveling salesman and Byzantine generals. Some entries have links to implementations and more information.
Biographical Dictionary
This dictionary covers more than 28,000 notable men and women who have shaped our world from ancient times to the present day. The dictionary can be searched by birth years, death years, positions held, professions, literary and artistic works, achievements, and other keywords.
