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).
Aorta, descending
The descending aorta is the part of the aorta, the largest artery in the body, that runs down through the chest and the abdomen. The descending aorta starts after the arch of the aorta and ends by splitting into two great arteries (the…
Read the definitionRandom terms
Show more- LASIK LASIK: Abbreviation standing for laser-assisted in situ keratomileusis, a kind of laser eye surgery designed…
- Antivenin Antibodies created in the blood of a horse or sheep when the animal is injected with snake venom. Antivenin…
- Placental growth factor A type of vascular endothelial growth factor. Placental growth factor is expressed not only in placental…
- Expressivity The consistency of a genetic disease. For example, Marfan disease shows variable expressivity. Some persons…
- Benzo(a)pyrene Abbreviated B(a)P. A member of a class of compounds known as polycyclic aromatic hydrocarbons (PAHs). B(a)P…
- Cafe au lait spot A flat spot on the skin that is the color of coffee with milk (café au lait) in persons with light skin, or a…
- Radiation oncology Also called radiation therapy or radiotherapy, radiation oncology is the use of high-energy rays to damage…
- Thalassiosira pseudonana An ocean diatom that is a major participant in the biological pumping of carbon to ocean depths and that has…
- Childbed fever Fever due to an infection usually of the placental site within the uterus. The fever is also called…
- Arthritis, systemic-onset chronic rheumatoid See: Arthritis, systemic-onset juvenile rheumatoid (Still's disease)
- Lung transplant The first lung transplant was done by the American surgeon James Hardy (1918-) in 1964.
- Alcoholism Physical dependence on alcohol to the extent that stopping alcohol use will bring on withdrawal symptoms. In…