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).
Node, sinus
The sinus node is one of the major elements in the cardiac conduction system, the system that controls the heart rate. This stunningly designed system generates electrical impulses and conducts them throughout the muscle of the heart…
Read the definitionRandom terms
Show more- Major anxiety disorder >panic disorder; >obsessive-compulsive disorder; >PTSD (post-traumatic stress disorder); >social phobia…
- Abused inhalant >Solvents > >Industrial or household solvents or solvent-containing products, including paint thinners or…
- Fabry disease A genetic disease due to deficiency of the enzyme alpha-galactosidase A. This enzyme is essential to the…
- Open fracture A fracture in which the bone is sticking through the skin. Also called a compound fracture. NTER> Note that…
- Uterine lining The inner layer of the uterus (womb); the cells that line the womb; anatomically termed the endometrium. This…
- Amygdala 1. The amygdaloid nucleus in the brain. 2. The tonsils. These structures were so named because they appeared…
- Tendonitis, Achilles See: Achilles tendonitis
- Viral hepatitis Viral hepatitis: Viral hepatitis is liver inflammation caused by viruses. Specific hepatitis viruses have…
- Methotrexate Methotrexate: A drug that acts as an antimetabolite and specifically as a folic acid antagonist that inhibits…
- Yolk stalk A narrow tube present in the early embryo that connects the midgut of the embryo to the yolk sac outside the…
- Familial Parkinson disease type 4 A familial form of Parkinson disease inherited in an autosomal dominant manner due to a gene on chromosome…
- French disease Syphilis. Depending upon someone's thoughts as to where the disease came from, syphilis was also known as the…