Medical Dictionary

Online dictionary

Medical Categories


Welcome to the Free Medical Dictionary


In Medicine, words have very specific meanings and are carefully used. is a lookup guide to the essential language of Medicine. is easy-to-use and comprehensive - the ideal quick reference guide for health care professionals and laypersons alike. It provides clear and instructive definitions, abbreviations, phrases and acronyms.

With over 40,000 entries in its database, covers a vast array of medical terminology. Among many others, you may search for medical terms related to:

  • Alternative Medicine
  • Cancer
  • Diabetes
  • Eye Disease
  • Medical Abbreviations is designed to assist in the understanding of medical terminology. It is not intended to replace the services of a physician. The medical terminology on is provided for informational purposes only and is not a substitute for professional medical advice. You should not use the information on for diagnosing a medical or health condition. You should consult a physician in all matters relating to your health, and particularly in respect to any symptoms that may require diagnosis or medical attention.

Medical Dictionary INDEX:

Please select a letter for all terms that start with it:
A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  µ  1  2  3  4  5  6  7  8  9  

Term of the day


Popular Terms

Other Resources



Merriam-Webster's Medical Dictionary

MedlinePlus: Medical Encyclopedia

MedlinePlus: Medical Dictionary

Online Medical Dictionary

TheFreeDictionary: Medical Dictionary

MedTerms Medical Dictionary


InteliHealth Health Portal

Mercksource (Dorland's Illustrated Medical Dictionary)

eMedicine (Stedman's Medical Dictionary)

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