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).
Niemann-Pick disease
A biochemical disorder affecting a lipid (fat) called sphingomyelin, resulting usually in progressive enlargement of the liver and spleen (hepatosplenomegaly), 'swollen glands' (lymphadenopathy), anemia and mental and physical…
Read the definitionRandom terms
Show more- Macular hole A hole in the macula, the tiny oval area made up of millions of nerve cells located at the center of the…
- Neuropathic pain Neuropathic pain: Chronic pain resulting from injury to the nervous system. The injury can be to the central…
- Vomer A triangular bone in the nasal septum. The bone was so named because it was thought to look like a…
- Deviation of the nasal septum Failure of the nasal septum to be in the center where it is supposed to be. (The nasal septum is the wall…
- Founder effect The positive effect on gene frequency when a population (a colony) has only a small number of original…
- Seizure, atonic See: Atonic seizure
- CC chemokine receptor 5 See: CCR5
- Lower GI series Short for lower gastrointestinal series. A series of x-rays of the rectum, colon and lower section of the…
- Gastric outlet obstruction Any disease that mechanically impedes gastric emptying, the normal emptying of the stomach. There is…
- Foodborne disease A disease caused by consuming contaminated food or drink. Myriad microbes and toxic substances can…
- PTU Propylthiouracil, an antithyroid medication, a drug that blocks the production of thyroid hormone by the…
- Heart disease, rheumatic Heart damage caused by rheumatic fever. Treatment is by preventing reinfection with strep and by treating…