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).
Vasoconstriction
Narrowing of the blood vessels resulting from contracting of the muscular wall of the vessels. The opposite of vasodilation
Read the definitionRandom terms
Show more- Cotinine The major metabolite (breakdown product) of nicotine. Exposure to nicotine can be measured by analyzing the…
- Nosology The systematic classification of diseases, or the branch of medical science that deals thereto. The adjective…
- Shock, cardiogenic Shock caused by heart failure. The heart fails to pump blood effectively. For example, a heart attack (a…
- Vein, brachial A vein that accompanies the brachial artery between the shoulder and the elbow. The route of the brachial…
- Sylvius, aqueduct of A canal that communicates between the third and fourth ventricles in a system of four communicating cavities…
- Blunted affect See: Flat affect
- Bronchiole A tiny tube in the air conduit system within the lungs that is a continuation of the bronchi and connects to…
- Qualitative Having to do with quality. In contrast to quantitative (which pertains to quantity, the amount)
- Horace Barker See: Barker, Horace Albert
- Murine typhus An acute infectious disease with fever, headache, and rash, all quite similar to, but milder than, epidemic…
- Intraocular In the eye. The intraocular pressure is the pressure within the eye
- Schistosoma japonicum A species of trematode worm that parasitizes humans and that (like S. mansoni) causes liver and…