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).
Automated external defibrillator
A device that automatically analyzes the heart rhythm and, if it detects a problem that may respond to an electrical shock, that permits a shock to be delivered to restore a normal heart rhythm. Abbreviated AED. Thanks to their small size…
Read the definitionRandom terms
Show more- Hereditary angioedema A genetic form of angioedema. (Angioedema is also referred to as Quinke's disease.) Persons with it are born…
- Radial head subluxation See: Nursemaid's elbow
- Defect, atrial septal (ASD) A hole in the septum, the wall, between the atria, the upper chambers of the heart. Commonly called an ASD…
- Hemorrhagic cyst This type of functional cyst occurs when bleeding occurs within a cyst. Symptoms such as abdominal pain on…
- Peptic ulcer Peptic ulcer: A hole in the lining of the stomach, duodenum, or esophagus. A peptic ulcer of the stomach is…
- Alexander technique A process that teaches how to properly coordinate body and mind to release harmful tension and to improve…
- Onycho- (prefix) Pertaining to the nails. Examples of medical terms involving 'onycho-' include onychodystrophy (abnormal…
- Bovine tuberculosis Tuberculosis in cattle caused by infection with the bacterium Mycobacterium bovis which can be transmitted to…
- Abrasion An abrasion or 'excoriation' is a wearing away of the upper layer of skin as a result of applied friction…
- Diverticula The plural of diverticulum. As a person ages, pressure within the large intestine (colon) causes pockets of…
- Sodium The major positive ion (cation) in fluid outside of cells. The chemical notation for sodium is Na+. When…
- AIDS wasting syndrome The involuntary weight loss of 10% of baseline body weight plus either chronic diarrhea (two loose stools per…