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).
System, sympathetic nervous
A part of nervous system that accelerates the heart rate, constricts blood vessels, and raises blood pressure. The sympathetic nervous system together with the parasympathetic nervous system (that slows the heart rate, increases intestinal…
Read the definitionRandom terms
Show more- Berylliosis Beryllium poisoning. See: Beryllium
- Nervous system, autonomic Part of the nervous system that was once thought to be functionally independent of the brain. The autonomic…
- Dyslexia Dyslexia: A specific reading disability due to a defect in the brain's processing of graphic symbols…
- Cancer, pancreatic See: Pancreatic cancer
- Syndrome, MASS A heritable disorder of connective tissue characterized by involvement of the mitral valve, aorta, skeleton…
- Hereditary ALS See: Familial ALS
- WHO (World Health Organization) A type of chromosome rearrangement, also called a Robertsonian translocation, in which there is fusion of an…
- Generic name, drug >The chemical name of a drug. >A term referring to the chemical makeup of a drug rather than to the…
- Thromboembolism Formation in a blood vessel of a clot (thrombus) that breaks loose and is carried by the blood stream to plug…
- Oxygen A colorless, odorless and tasteless gas that makes up about 20% of the air we breathe (and at least half the…
- Orthopaedist An orthopaedic surgeon, a doctor who corrects congenital or functional abnormalities of the bones with…
- Injection snoreplasty To harm, hurt, or wound. The word injure may be in physical or emotional sense. Treadmill machines may injure…