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The leading source for trustworthy and timely health and medical news and information. Providing credible health information, supportive community, and educational services by blending award-winning expertise in content, community services, expert co...

Welcome to InnerBody.com, your online guide to the anatomy and physiology of the human body. Study diagrams, internal organs, body parts and systems.

The National Library of Medicine (NLM), on the campus of NIH in Bethesda, Maryland, is the world

Read doctor-produced health and medical information written for you to make informed decisions about your health concerns.

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

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

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

The eMedicine point-of-care clinical reference features up-to-date, searchable, peer-reviewed medical articles organized in specialty-focused textbooks, and is continuously updated with practice-changing evidence culled daily from the medical literat...

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

Information on dog, cat, and other pet health, behavior, nutrition, training and animal care tips provided by veterinarians.

For more than a century, Memorial Sloan-Kettering Cancer Center has offered the best possible care for patients with cancer and has sought strategies to prevent, control and ultimately cure cancer in the future. Our continuing record of success in th...

The largest and most trusted free online thesaurus. Quickly find accurate and up-to-date synonyms, antonyms, and related words at Thesaurus.com. Synonym dictionary, antonym dictionary, words synonyms.

Pet Health Information - PetMD is the largest website library of pet health information, including symptoms, diagnosis and treatment, with thousands of veterinarian written and approved articles.