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).
MASS syndrome
A heritable disorder of connective tissue characterized by involvement of the mitral valve, aorta, skeleton, and skin. Hence, the acronym MASS (Mitral valve, Aorta, Skeleton, Skin). The MASS syndrome is due to a mutation in FBN1, the…
Read the definitionRandom terms
Show more- Somnolence Sleepiness, the state of feeling drowsy, ready to fall asleep. A person experiencing somnolence is somnolent…
- Electroretinography Electroretinography: Abbreviated ERG. A test in which the electrical potentials generated by the retina of…
- Mitochondrial encephalopathy, MELAS MELAS is the acronym for Mitochondrial Encephalopathy, Lactic Acidosis, and Stroke-like episodes. MELAS is a…
- APECED (autoimmune polyendocrinopathy) Laxative. Used both as a noun (an aperient is a laxative) and adjective (prunes are an aperient fruit). From…
- Stethoscope An instrument used to transmit low-volume sounds such as the heartbeat (or intestinal, venous, or fetal…
- Chamber, posterior The space in the eye behind the iris and in front of the lens. The iris is the colored ring of tissue that…
- Chronic arthritis, systemic-onset juvenile See: Arthritis, systemic-onset juvenile rheumatoid
- Spin doctor Not a physician who is expert on dizzying conditions but someone who puts a spin on the news to manipulate…
- EBA (epidermolysis bullosa acquisita) See: Epidermolysis bullosa acquisita
- Syndrome, Alagille Also known as arteriohepatic dysplasia, this is a genetic disorder characterized by jaundice in the newborn…
- Skin erosion Skin erosion is a loss of some or all of the epidermis (the outer layer) leaving a denuded surface. Erosion…
- Post-nasal drip Mucous accumulation in the back of the nose and throat leading to or giving the sensation of mucus dripping…