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).
Endothelial
Relating to the endothelium, the layer of flat cells lining the closed spaces of the body such as the inside of blood vessels, lymphatic vessels, the heart, and body cavities. By contrast, the outside layer of cells that covers all the…
Read the definitionRandom terms
Show more- Interleukin-4 A protein that stimulates the immune system to develop mast cells, resting T-cells, and activated B-cells…
- SCID Severe combined immunodeficiency disease
- Miscarriage, multiple More than one miscarriage for a woman. In multiple miscarriages, there is about a 5 percent chance that one…
- Idiopathy A disease or medical condition of unknown origin or which has no apparent cause. As in the idiopathy of…
- Prothrombin time A clotting test, the prothrombin time is done to test the integrity of part of the clotting scheme. The…
- Green fluorescent protein Abbreviated GFP. A protein that glows green under fluorescent light. Found naturally in the jellyfish…
- Angioplasty Procedure with a balloon-tipped catheter to enlarge a narrowing in a coronary artery. Also called…
- Disease, occupational A disease due to a factor in a person's occupation. For example, lung disease in miners. Occupational…
- Extrapulmonary tuberculosis See: Tuberculosis, extrapulmonary. See also: Tuberculous meningitis
- Aspiration pneumonia Pneumonia: Infection of the lungs due to aspiration (the sucking in of food particles or fluids into the…
- Retrosternal Behind the sternum (the breastbone)
- Atonic seizure A seizure in which the person suddenly loses muscle tone and strength and, unless supported, falls down. Also…