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

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

Online Medical Dictionary and glossary with medical definitions

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...

Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia e...

Prescription drug information and news for professionals and consumers. Search our drug database for comprehensive prescription and patient information on 24,000 drugs online

The Institue for Dental Implant Awareness (IDIA) is a non-profit corporation which provides information on the benefits of dental implants.

Nature - the world

In-depth information on back pain, neck pain, lower back pain, sciatica and more, including articles, videos, forums and physician interviews.

The New England Journal of Medicine (NEJM) is a weekly general medical journal that publishes new medical research and review articles, and editorial opinion on a wide variety of topics of importance to biomedical science and clinical practice.

Genova Diagnostics is a global leader in functional laboratory testing, pioneering innovative new approaches to personalized medicine. Patients and clinicians focusing on wellness and prevention and taking an active role in managing health prefer dia...

Radiopaedia.org, the online collaborative radiology resource.