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).
Heart disease
Heart disease: Any disorder that affects the heart. Sometimes the term 'heart disease' is used narrowly and incorrectly as a synonym for coronary artery disease. Heart disease is synonymous with cardiac disease but not with cardiovascular…
Read the definitionRandom terms
Show more- Fisher's exact test A statistical test of independence much used in medical research. It tests the independence of rows and…
- Pleural effusion Excess fluid between the two membranes that envelop the lungs. These membranes are called the visceral and…
- Prosthetics The art and science of developing artificial replacements for body parts. Depending on the type of…
- Giant cell arteritis A serious disease characterized by inflammation of the walls of the blood vessels (vasculitis). The vessels…
- Valve, bicuspid One of the four valves of the heart, this one is situated between the left atrium and the left ventricle. It…
- RLL Acronym for the right lower lobe (of the lung). The right lung has three lobes: the right upper lobe (RUL)…
- Birth assistant See: Doula (the first meaning)
- Breast cancer gene BRCA1 A gene that normally acts to restrain the growth of cells in the breast but, when mutated, predisposes to…
- Gnathostomiasis A disease due to the migration of an immature roundworm called Gnathostoma. Migration just under the skin…
- Stratum corneum The stratum corneum as a rule refers to the outermost layer of the epidermis, which is itself the outer layer…
- Exercise treadmill Exercise on a treadmill, a machine with a moving strip on which one walks without moving forward. A treadmill…
- OGG1 A DNA repair enzyme with antimutator activity. OGG1 is one of a number of enzymes that repair damage done to…