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.

Welcome to About.com's asthma site. Being a patient with or the parent of a child with a chronic illness can be difficult and frustrating. Everywhere you look toy hear something different about asthma. We will try to focus this site on 'what do you need to know' and 'what do you need to do' to take better care of you asthma and preventing your asthma from getting worse. I look forward to interacting with you

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

wiseGEEK: clear answers for common questions

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

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 encyclopedia, Wikipedia encyclopedia, Hutchinson encyclopedia, examples from classic literature, pronunciations, word browser, glossary. Free access

The Probert Encyclopaedia is an extensive free online encyclopedia and dictionary of over 300,000 cross-referenced and interlinked topics with over 16,000 photos and illustrations and over 2000 maps, specialising in information not found in other encyclopedias and dictionaries.

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.