MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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).
Vein of Galen aneurysm
A congenital malformation of blood vessels of the brain. Specifically, an arteriovenous (AV) malformation in which blood shunts from cerebral arteries into a dilated vein of Galen (an internal cerebral vein). In newborns this shunt can…
Read the definitionRandom terms
Show more- Septum, nasal The dividing wall within the nose. The nasal septum runs down the middle of the nose creating two sides to…
- Abdominal aorta The abdominal aorta is the final section of the aorta, the largest artery in the body. It is a continuation…
- RF Rheumatoid factor. Rheumatoid factor is an antibody that is measurable in the blood. It is commonly used as a…
- GDF-8 The gene encoding growth and differentiation factor, also known as myostatin. See: Myostatin
- Syndactyly, partial A condition in which fingers or toes are partially joined together. Syndactyly can involve the bones or just…
- Crossing over The exchange of genetic material between two paired chromosomes. Crossing over is a way to recombine the…
- Fart This is not an accepted medical word for passing gas. Excess gas in the intestinal is medically termed…
- Oligodactyly Fewer than the normal number of fingers or toes. Oligo- is from the Greek 'oligos' (few or scanty) + -dactyly…
- Alpha blocker A drug that blocks receptors in arteries and smooth muscle. This action relaxes the blood vessels and leads…
- Pathologist, speech-language See: Speech-language pathologist
- Surgery, stereotactic Surgery in which a system of three- dimensional coordinates is used to locate the site to be operated on…
- Arteries, coronary The vessels that supply the heart muscle with blood rich in oxygen. They are called the coronary arteries…