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Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sites.

Medical Dictionary is intended for use by healthcare consumers, students, and professionals as well as anyone who wants to keep up with the burgeoning array of terminology found in today’s medical news. By staying clear of jargon, the dictionary o...

Dictionary.com - the largest and most trusted free online dictionary. Instantly look up accurate and extensive definitions and word meanings, and hear audio pronunciations.

Browse through thousands of 3D models, Illustrations, and Photographs of the human body. Complete description of anatomy structures and audio pronunciation.

Online educational resources for K-12, college, gradudate school, and distance learning – free online dictionary, thesaurus, encyclopedia, test preparation, homework help and information about K-12 schools, colleges, college admissions, and student ...

Trusted medical information to encourage healthy living. Enjoy free health tools and view detailed doctor-reviewed information about diseases, medical symptoms, treatments, drugs, and nutrition.

Free Online Medical Dictionary and Medical Searches for the Doctor or Healthcare Professional

Radiopaedia.org, the online collaborative radiology resource.

Definition of word from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games.

Answers.com: Wiki Q&A combined with free online dictionary, thesaurus, and encyclopedias. Ask questions, get answers.

Bartleby.com publishes thousands of free online classics of reference, literature and nonfiction