MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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.
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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).
Anthrax toxin
The toxic substance secreted by the bacterium Bacillus anthracis, the causative agent of the disease anthrax. Anthrax toxin is made up of three proteins. One is protective antigen and two are enzymes that are called edema factor and lethal…
Read the definitionRandom terms
Show more- Menopause Menopause: The time in a woman's life when menstrual periods permanently stop; it is also called the 'change…
- Spot, histo See: Histo spot
- Cranial nerve I The first nerve to emerge from or enter the skull (the cranium). (There are twelve cranial nerves.) The first…
- Rapid strep test Rapid strep test: A diagnostic test commonly used to demonstrate whether streptococcus bacteria ('strep') are…
- Aortic aneurysm An outpouching (a local widening) of the largest artery in the body, the aorta, involving that vessel in its…
- Node, atrioventricular The atrioventricular (AV) node is an electrical relay station between the atria (the upper) and the…
- Granulomatosis, allergic A disease (also more commonly called the Churg-Straus syndrome) characterized by inflammation of the blood…
- Body image obsession Excessive concern about one's appearance. Some concern about one's appearance is normal. But an obsession…
- Teratogen, coumadin as The anticoagulant ('blood- thinner') coumadin is a known teratogen, an agent that can disturb the development…
- Apolipoprotein A-I APOA-I. The major protein component of HDL (high density lipoprotein) and a relatively abundant plasma…
- Immune thrombocytopenic purpura A blood disorder characterized by the destruction of blood platelets due to the presence of antiplatelet…
- Infant, post-term An overly mature baby that has not been born until well after the usual term pregnancy. A post-term baby is…