Archaic Medical Terms - a glossary that defines archaic terminology for medical conditions, symptoms, and diseases originally created to help genealogy researchers.

InteliHealth: Merriam-Webster Medical Dictionary - search for definitions for specific diseases, drugs, anatomical parts, and more.

Medical Dictionary Online - provides a searchable dictionary and glossary of medical terminology definitions, pharmaceutical drugs, medical devices, health conditions, specialty terms, and abbreviations.

Medical/Surgical Word Glossary - FDA approved drugs, devices, surgical/medical instruments, and procedures.

MedTerms.com Medical Dictionary - alphabetical list of terms and definitions.

Multilingual Glossary of Technical and Popular Medical Terms in Nine European Languages - provides medical terms in English, French, Spanish, Portuguese, Italian, Dutch, Greek, Danish, and German.

On-Line Medical Dictionary - OMD is a searchable dictionary of terms relating to biochemistry, biology, chemistry, medicine, molecular biology, physics, plant biology, radiobiology, and zoology.

Who Named It? - dictionary of medical eponyms with the stories of diseases, conditions, medical syndromes, and the people whose names they carry.