Medical Dictionaries, Encyclopedias & Search Engines

Medical Search Engines


PubMed – By the National Library of Medicine. – By the US Dept.of Health & Human Services (advertisement free).

Agency for Toxic Substances and Disease Registry – If it’s poisonous, lethal, or seriously noxious, you can probably find it—and a remedy—in this database of toxic substances and diseases. – from


Harvard Health

Medical World Search – Full text search capability for nearly 100,000 Web pages from thousands of selected medical sites.

MedicineNet – Search disease and pharmacy archives, “ask the experts,” read hot news, or learn how to save a life with this mega-site maintained by physician-educators.

Search the internet for medical resources with

Medical Dictionaries, Encyclopedias & Research

U.S. National Library of Medicine

MEDLINEplus – MEDLINEplus has extensive information from the National Institutes of Health and other trusted sources on over 600 diseases and conditions. There are also lists of hospitals and physicians, a medical encyclopedia and a medical dictionary, health information in Spanish, extensive information on prescription and nonprescription drugs, health information from the media, and links to thousands of clinical trials.

PubMed – a service of the National Library of Medicine, includes over 14 million citations for biomedical articles back to the 1950’s. These citations are from MEDLINE and additional life science journals. PubMed includes links to many sites providing full text articles and other related resources.

Medical Abbreviations

Medical Abbreviations

Medical Dictionary – Harvard

Medical Dictionary – MedicineNet

ICD-10 Code Search – The International Classification of Diseases (ICD) is the classification used to code and classify mortality data from death certificates.

ICD-10 Codes – free reference website designed for the fast lookup of all current American ICD-10-CM (diagnosis) and ICD-10-PCS (procedure) medical billing codes.

Definitions of Medical Equipment & Surgical Instruments

Medical & Dental Abbreviations – JMD

Medical & Dental Abbreviations 

Dental Abbreviations  

Harrison’s OnlineThe complete text, illustrations, and expanded features from the 15th edition of Harrison’s Principles of Internal Medicine.

Free Medical JournalsThe Free Medical Journals Site is dedicated to the promotion of free access to medical journals over the Internet.

Merck Manual of Diagnosis & Therapy

Center Watch Clinical Trials Listing Service – A service of NIH

University of Iowa Hospital Health Library formerly Virtual Hospital – is a digital health sciences library created in 1992 at the University of Iowa to help meet the information needs of health care providers and patients.  The Virtual Hospital digital library contains thousands of textbooks and booklets for health care providers and patients.  The Virtual Hospital digital library also delivers Continuing Education (CE) to health care provider’s offices and homes in a clinically relevant context at their convenience, thereby making CE more effective and efficient.

The Virtual Body 

Anatomy of the Human Body [H Gray; 1918 Ed.] –

Anatomical Science Image Library – find anatomical images of the human body.

eSkeletons Project

Illustrated Encyclopedia of Human Anatomic Variations 

Musculoskeletal Atlas – contains more than 80 anatomical images of upper and lower extremities

Musculoskeletal 3D Anatomy Atlas

Muscles Tutorial 

3D Introduction to Muscle Anatomy

Wheeless’ Textbook of Orthopaedics – Fabulous web site with great images and a lot of good information.

Medical Library – by WebMD

Today on Medscape – Daily Medical News on line.  A great website for medical information.

FDA consumer information  

CPR & First Aid training

Safe States – An Alliance to Strengthen the Practice of Injury and Violence Prevention

National Guideline Clearinghouse™ (NGC) – a public resource for summaries of evidence-based clinical practice guidelines.  provides over 80 message boards for specific health concerns that are free for anyone to participate in. You can post questions, comments, and respond to messages from others.

QuackWatch – Guide to Quackery, Health Fraud, and Intelligent Decisions