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Merriam-Webster Online
Merriam-Webster provides a free online dictionary, thesaurus, audio pronunciations, Word of the Day, word games, and other English language resources.
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.

Yahoo! Directory Dictionaries > By Language
Yahoo! Search Directory's listing of language dictionaries from Afrikaans to Yiddish.

Rhyme Zone
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, radio biology, science and technology. It includes: acronyms, jargon, theory, conventions, standards, institutions, projects, eponymous, history, in fact anything to do with medicine or science.

Med Terms Medical Dictionary
Med Terms online medical dictionary is the medical reference for, 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. contains more than 2,500 Western signs, arranged into 54 groups according to their graphic characteristics. In 1,600 articles their histories, uses, and meanings are thoroughly discussed. The signs range from ideogram's carved in mammoth teeth by Cro-Magnon men, to hobo signs and subway graffiti.

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.

Encyclopedias and Research

CIA - The World Fact book
The first classified Fact book was published in August 1962, and the first unclassified version was published in June 1971. The 1975 Fact book was the first to be made available to the public with sales through the US Government Printing Office (GPO). The Fact book was first made available on the Internet in June 1997. The year 2003 marks the 56th anniversary of the establishment of the Central Intelligence Agency and the 60th year of continuous basic intelligence support to the US Government by The World Fact book and its two predecessor programs.
Internet's premiere free encyclopedia, provides users with more than 57,000 frequently updated articles from the Columbia Encyclopedia, Sixth Edition. Each article is enhanced with links to newspaper and magazine articles as well as pictures and maps - all provided by HighBeam Research.

Google Scholar
Google Scholar enables you to search specifically for scholarly literature, including peer-reviewed papers, theses, books, preprint's, abstracts and technical reports from all broad areas of research. Use Google Scholar to find articles from a wide variety of academic publishers, professional societies, preprint repositories and universities, as well as scholarly articles available across the web.

HighBeam Research
Search this extensive archive of more than 32 million documents from 2,800 sources   a vast collection of articles from leading publications, updated daily and going back as far as 20 years. Save your searches, save articles and set up alerts to save time and increase your efficiency. HighBeam Research offers both basic (free) and full membership options. 

General Reference

Wikipedia :- The free encyclopedia
"The Free Encyclopedia", is a website that hosts a multilingual free-content knowledge database that is editable by anyone with internet access. The project began on January 15, 2001, as a complement to the expert-written (and now defunct) Nupedia, and is now operated by the non-profit Wikimedia Foundation. More than 1,049,853 articles in English on Arts, Biography, Geography, History, Mathematics, Science, Society, Technology and more subjects.

Internet Public Library: Reference
All of the basic research tools such as dictionaries and encyclopedias that you expect to find in a library -- and more! is a free virtual library resource center for educators and students, librarians and their patrons, families, businesses and just about anyone exploring the Web for valuable research information. Sites featured on are hand-selected and reviewed by an editorial team for their exceptional quality, content and utility.

Librarians' Index to the Internet
Librarians' Index to the Internet (LII) is a searchable, annotated subject directory of more than 12,000 Internet resources selected and evaluated by librarians for their usefulness to users of public libraries. LII is used by both librarians and the general public as a reliable and efficient guide to Internet resources.

Search Engine Reference

Whether you're a student, a parent, or just plain curious, Search Engine Reference offers a handy selection of books and materials to help you find the information you need. Look up a definition in the dictionary, find map and flag images for every country in the world in the World Fact book, get in-depth information from the encyclopedia, and much more.

  1. Yahoo Education
  2. Google Education
  3. Public Education in US - by MSN

K-12 Reference

BJ Pinchbeck's Homework Helper
BJ Pinchbeck's Homework Helper provides K-12 learners user with more than 700 relevant links to sites around the world that will help you with your homework.

Education World's Research Center
The Toolbox Section contains all sorts of handy useful links to great resources, like online dictionaries, language translators, encyclopedias, maps, conversion engines, and more!

Fact Monster
Fact Monster is an ideal reference site for kids ages 8-14 that provides entertainment and educational resources. It combines the contents of an encyclopedia, a dictionary, an atlas, and several almanacs loaded with statistics, facts, and historical records. A single search engine allows you to search all these sources at once.

HomeworkSpot is a free homework information portal that features the very best K-12 homework-related sites together with engaging editorial in one high-utility, educational spot. With the help of students, parents and teachers, HomeworkSpot's team of educators, librarians and journalists has scoured the Web to bring you the best resources for English, math, science, history, art, music, technology, foreign language, college prep, health, life skills, extracurricular activities and much more.

World Almanac for Kids
Cool facts from the publishers of the World Almanac and Book of Facts for kids about animals, the environment, birthdays of famous people, inventions, countries of the world, population, U.S. Presidents, world religions, space, sports, the 50 U.S. states, and a time line of U.S. history.

Mathematics is dedicated to providing revolutionary ways for students, parents, teachers, and everyone to learn math. Combining educationally sound principles with proprietary technology, offers a unique experience that quickly guides the user to the solutions they need and the products they want.

Are you stumped on a math problem? Help is on the way! Mathematics is a challenging subject that mystifies many. Imagine the problem as a complicated puzzle that you must solve. All the pieces must fit in order for you to realize your success. This web site is devoted to helping you through your math worries!

Professor Freedman's Math Help
This site provides information about basic math, algebra, study skills, math anxiety and learning styles and specifically addresses the needs of the community college adult learner. A student who is frustrated by college math can be helped by identifying his individual learning style and recognizing the instructor's teaching style. This site provides links for students and teachers to information about learning styles, study skills tips, and ways to reduce math anxiety and gives the students access to tutorials, algebra assignments, math videos, and a forum for discussing with the professor a variety of math topics.

S.O.S. Mathematics is a free resource for math review material from Algebra to Differential Equations! Get help to do your homework, refresh your memory, prepare for a test. Browse more than 2,500 Math pages filled with short and easy-to-understand explanations - from simplifying fractions to the cubic formula, from the quadratic equation to Fourier series, from the sine function to systems of differential equations - this is the one stop site for your math needs. You can also check out CyberExams to prepare for a test, or ask a question on the popular CyberBoard! 

Is is late at night? Stuck on math homework due tomorrow? Big exam coming up? Perhaps Webmath can help! This site is composed of many math "fill-in-forms" into which you can type the math problem you're working on. Linked to these forms is a powerful set of math-solvers, that can instantly analyze your problem, and when possible, provide you with a step-by-step solution, instantly!


Merriam-Webster Online
Merriam-Webster provides a free online dictionary, thesaurus, audio pronunciations, Word of the Day, word games, and other English language resources.
Great Books Online -- Encyclopedia, Dictionary, Thesaurus and hundreds more. publishes thousands of free online classics of reference, literature and nonfiction

Questia is the first online library that provides 24/7 access to the world's largest online collection of books and journal articles in the humanities and social sciences, plus magazine and newspaper articles. You can search each and every word of all of the books and journal articles in the collection. You can read every title cover to cover. Questia requires a monthly, quarterly or yearly subscription.


Strunk, William, Jr. 1918. The Elements of Style Asserting that one must first know the rules to break them, this classic reference book is a must-have for any student and conscientious writer.

How to Cite/Format References for Research Papers
This website features a collection of links to websites that explain how to properly use American Psychological Association (APA) Style, Modern Language Association (MLA) Style, American Medical Association (AMA) Style, Chicago Manual of Style, and Turabian Style for writing research papers.

A Guide for Writing Research Papers Based on Modern Language Association (MLA) Documentation
Recommendations here are based on the MLA Handbook for Writers of Research Papers. It is important to note, however, that individual instructors and institutions or departments may vary from these recommendations somewhat and that it is always wise to consult with your instructor before formatting and submitting your work.

APA Style Essentials
The Publication Manual of the American Psychological Association (5th ed., 2001) provides a comprehensive reference guide to writing using APA style, organization, and content. The purpose of this document is to provide a common core of elements of APA style that all members of a department can adopt as minimal standards for any assignment that specifies APA style. Instructors will specify in writing when any of the following elements do not apply to a specific assignment that specifies APA style (e.g., when an abstract is not required) or when additional APA style elements must be observed.

Selected 3 Online Universities

Kaplan University Online

Grand Canyon University Online

Westwood College

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