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We Support a Healthier Future - Healthy People 2020

Medical Dictionaries (General)

Medical Encyclopedia

Browse this medical encyclopedia to find over 4,000 articles about diseases, tests, symptoms, injuries, and surgeries. It also contains an extensive library of medical photographs and illustrations.

Review Date: February 05, 2013

NIH National Library of Medicine - NLM

MedlinePlus (Merriam Webster) Medical Dictionary

Search this medical dictionary to find a definition of a health-related word or phrase. When a red speaker icon appears next to your word, select the icon to hear how the word is pronounced.

Review Date: April 19, 2012

NIH National Library of Medicine - NLM

WORD! A Glossary of Medical Words

Find definitions for medical terms here.

Review Date: February 04, 2013

The Nemours Foundation