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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
QT syndrome, long
An inherited defect in the heart rhythm. In the US alone, it is estimated that 4,000 children and young adults die yearly of the long QT syndrome. It is a common cause of sudden death among school athletes, as well as the cause of many…
Read the definitionRandom terms
Show more- Runt-related transcription factor 1 See: Runx-1
- DiGeorge syndrome A genetic disorder characterized by hypocalcemia, immunodeficiency, and congenital heart disease: >…
- Drug, sulfa One of the sulfonamides, the sulfa-related antibiotics which are used to treat bacterial and some fungal…
- Hepatic duct A duct that carries bile from the liver into the common bile duct which conveys it to the duodenum (the upper…
- Bernard-Soulier syndrome Nt platelet syndrome): The Bernard-Soulier syndrome is a primary problem of platelets in which the platelets…
- Antonomastic Concerning, pertaining to, or characteristic of antonomasia. See also: Antonomasia
- HHV-8 Human herpesvirus 8, a herpesvirus that contributes to the development of Kaposi sarcoma, an otherwise rare…
- Lens, intraocular See: Intraocular lens
- Thymosin One of several polypeptide hormones secreted by the thymus that control the maturation of T cells. They are…
- Nerve, glossopharyngeal The glossopharyngeal nerve is the ninth cranial nerve. The 12 cranial nerves, the glossopharyngeal nerve…
- Hypercholesterolemia High blood cholesterol. This can be sporadic (with no family history) or familial. Familial…
- Colitis, ulcerative A relatively common disease that causes inflammation of the large intestine (the colon). The cause is…