MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
The most complete online medical dictionary: 16,436 terms covering anatomy, physiology, pathologies, diagnostic exams, pharmacology and every clinical specialty.
Designed for 3 kinds of users:
- Patients and family who want to understand a diagnosis, a medical report or instructions from a doctor.
- Students of medicine, nursing, physiotherapy and the health professions, dealing with technical terminology.
- Doctors, pharmacists and healthcare workers who need a quick and reliable reference.
Definitions are written in clear, accessible language while keeping the rigor required for professional use. Each term has a dedicated URL, instant autocomplete search, and can be shared on WhatsApp, Facebook, X and via email with one click.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
Disclaimer: the content is for informational and educational purposes only and does not replace medical advice. If you have doubts about your health, always consult a qualified professional. In case of emergency call your local emergency number (911 in the US, 112 in the EU).
E. coli
Short for Escherichia coli, the colon bacillus, a bacterium that normally resides in the human colon. E. coli has been studied intensively in genetics and molecular and cell biology because of its availability, its small genome size, its…
Read the definitionRandom terms
Show more- Rat-flea typhus Murine typhus, an acute infectious disease with fever, headache, and rash, all quite similar to, but milder…
- Werner-His disease Named for the German physician Heinrich Werner (who did not describe Werner's premature aging syndrome) and…
- Dystonia, writer's cramp A dystonia that affects the muscles of the hand and sometimes the forearm and only occurs during handwriting…
- EPA 1. The Environmental Protection Agency, a US government agency.2. Eicosapentaenoic acid, one of the principal…
- Myco- Prefix that denotes a relationship to fungus. From the Greek mykes, meaning fungus
- Homeopathy A system of therapy based on the concept that disease can be treated with drugs (in minute doses) thought…
- Portal vein A large vein that carries blood from the stomach and the intestines to the liver. The portal vein is formed…
- Nymph A nymph is a stage in the life cycle of certain arthropods, as ticks and lice. (Not all nymphs are in Greek…
- Squawroot See: Blue cohosh
- Age-related macular degeneration Macular degeneration: An eye disease with its onset usually after age 60 that progressively destroys the…
- Dystonia Dystonia: Involuntary movements and prolonged muscle contraction, resulting in twisting body motions, tremor…
- Pachyderma Thick skin, like that of a pachyderm (an elephant, rhinoceros, or hippopotamus). From the Greek pachydermos…