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.
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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).
Atrioventricular node
The atrioventricular (AV) node is an electrical relay station between the atria (the upper) and the ventricles (the lower chambers of the heart). Electrical signals from the atria must pass through the AV node to reach the ventricles. The…
Read the definitionRandom terms
Show more- Spinous process A slender projection from the back of a vertebra to which muscles and ligaments are attached
- Diarrhea and dermatitis, zinc deficiency Diarrhea and dermatitis, zinc deficiency: Among the consequences of zinc deficiency, dermatitis (skin…
- Cyst, sebaceous A sebaceous cyst is a rounded swollen area of the skin formed by an abnormal sac of retained excretion…
- SCID Severe combined immunodeficiency disease
- Capillaries Capillaries are the smallest of blood vessels. They serve to distribute oxygenated blood from arteries to the…
- Chamber, anterior The space in the eye that is behind the cornea and in front of the iris. The cornea is the outer…
- Agent, antihypertensive As the name suggests, a drug aimed at reducing high blood pressure (hypertension)
- Ascariasis Infection with Ascaris lubricoides, the intestinal roundworm, the most common worm infection in humans…
- Autistic savant A person with autism who is exceptionally gifted in a specialized field. That field may, for example, be…
- Fungicidal Capable of killing fungi
- Jadassohn-Lewandowski Syndrome This syndrome is a form of what is called elephant nails from birth (pachyonychia congenita). The…
- Drug resistance The ability of bacteria and other microorganisms to withstand a drug to which they were once sensitive and…