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).
Atrial septal defect (ASD)
A hole in the septum, the wall, between the atria, the upper chambers of the heart. Commonly called an ASD. ASDs constitute a major class of heart formation abnormalities present at birth (congenital cardiac malformations). Normally, when…
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Show more- Astrocytoma A tumor that begins in the brain or spinal cord in small, star-shaped cells called astrocytes. The location…
- Hepatitis E virus The agent responsible for hepatitis E. Abbreviated HEV. For more information, see: Hepatitis E
- Insufficiency, small intestine See: Short bowel syndrome
- Human parainfluenza virus One in a group of four RNA viruses that rank second only to respiratory syncytial virus (RSV) as a common…
- Locus minoris resistentiae Latin meaning a place of less resistance. A locus minoris resistentiae offers little resistance to…
- Heritable connective tissue disease A disorder due to mutation of a gene responsible for connective tissue, the material that gives tissues form…
- DNA amplification The production of multiple copies of a sequence of DNA. Repeated copying of a piece of DNA. DNA amplification…
- Medulla, adrenal The inner portion of adrenal gland. (The outer portion is the adrenal cortex). The adrenal medulla makes…
- Angiography, fluorescein See: Von Willebrand disease.
- Fungistatic Capable of inhibiting the growth of fungi
- Deltoid An adjective and a noun. Adjective: In the shape of delta, the fourth letter in the Greek alphabet. A capital…
- Aerophobia An abnormal and persistent fear of flying. Sufferers experience severe anxiety even though they usually…