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 offers fast and concise information, whether the user is searching for a description of an over-the-counter or prescription medication, a medical abbreviation, a test procedure, a medical research topic, or an illness. Over 45,000 entries from all areas of medicine and healthcare are included.

The National Library of Medicine (NLM), on the campus of NIH in Bethesda, Maryland, is the world's largest medical library. It collects materials in all major areas of the health sciences and to a lesser degree in such areas as chemistry, physics, botany and zoology. The collections stand at 5 million items--books, journals, technical reports, manuscripts, microfilms, photographs and images. Housed within the Library is one of the world's finest medical history collections of old (pre-1914) and rare medical texts, manuscripts, and incunabula.

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

Web site of the American Academy of Family Physicians, a medical specialty society that represents more than 93,700 family physicians and medical students.

Homepage of Merck.com, Merck's corporate Web site

The Agency for Healthcare Research and Quality (AHRQ) is the lead Federal agency charged with improving the quality, safety, efficiency, and effectiveness of health care for all Americans.

Consumer Health News, Information and Resources Updated Daily - Consumer Health Information by HealthScout,Healthscout.com - get the latest health news. Features include mini-checkups, health library, medical search and more.

Extensive knowledge base of medical information on symptoms, diagnosis, and misdiagnosis of more than 20,000 medical conditions. Research causes of your symptoms or research treatments for diseases.