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).
Aorta, thoracic
The thoracic aorta is a section of the aorta, the largest artery in the body, within the chest. Specifically, the thoracic aorta is that part of the aorta that starts after the arch of the aorta and runs down to the diaphragm, the great…
Read the definitionRandom terms
Show more- Pneumopericardium Air or gas in the space between the heart and the pericardium, the membrane surrounding the heart.
- Thrombocythemia An abnormally high number of platelets in the blood. Also known as thrombocytosis.
- Binucleate Having two nuclei. Binucleate cells are due to a defect in cytokinesis, the process by which two daughter…
- Pox virus See: Orthopox
- Artemisinin An antimalarial agent extracted from the dry leaves of the Chinese herb Artemsisia annua (qinghaosu or sweet…
- Thrombinogen Better known today as prothrombin, a coagulation (clotting) factor needed for the normal clotting of blood…
- Syndrome, MELAS MELAS is the acronym for Mitochondrial Encephalopathy, Lactic Acidosis, and Stroke-like episodes. MELAS is a…
- Disease, alveolar hydatid See Nail-patella syndrome.
- Captioning The text display of spoken words, presented on a movie screen or a television (or another type of monitor)…
- Measles Measles: An acute and highly contagious viral disease characterized by fever, runny nose, cough, red eyes…
- Vaccine, killed polio See: Polio vaccine, inactivated
- Baylisascaris Infection by the raccoon roundworm. Baylisascaris procyonis is found commonly in raccoons. When infective…