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).
Matter, white
The part of the brain that contains myelinated nerve fibers. The white matter is white because it is the color of myelin, the insulation covering the nerve fibers. The white matter is as opposed to the gray matter (the cortex of the brain…
Read the definitionRandom terms
Show more- U.S. National Library of Medicine (NLM) The world's largest medical library, the U.S. National Library of Medicine (NLM) is part of the National…
- Biliary compression Abnormal pressure on the biliary tree compromising the normal drainage of bile
- Cascade A sequence of successive activation reactions involving enzymes (enzyme cascade) or hormones (hormone…
- Cranial dystonia A term used to describe dystonia that affects the muscles of the head, face, and neck. Oromandibular dystonia…
- Familial Parkinson disease type 11 A familial form of Parkinson disease inherited in an autosomal dominant manner due to a gene on chromosome…
- Deer mouse A deceptively cute rodent capable of carrying the types of hantavirus that cause HPS (hantavirus pulmonary…
- Acuity, visual The clarity or clearness of the vision, a measure of how well a person sees. The ability to distinguish…
- Fridayitis A perplexing condition that suddenly strikes some workers and students on Friday and leads to their absence…
- Clinical trials Clinical trials: Trials to evaluate the effectiveness and safety of medications or medical devices by…
- Dermatomyositis A chronic inflammatory disease of skin and muscle which is associated with patches of slightly raised reddish…
- Pacing, diaphragm See: Diaphragm pacing
- Section, Cesarian The obstetrical procedure is often spelled this way in the U.S. with just an 'e'although the Roman emperor…