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).
Calcium
A mineral found mainly in the hard part of bones, where it is stored. Calcium is added to bones by cells called osteoblasts and is removed from bones by cells called osteoclasts. Calcium is essential for healthy bones. It is also important…
Read the definitionRandom terms
Show more- Pinel system The policy of treating the mentally ill in hospitals and other institutions humanely and without the use of…
- Contiguous gene syndrome A disorder due to deletion of multiple gene loci that are adjacent to one another. Contiguous gene syndromes…
- Paraquat lung Lung disease caused by the contact herbicide paraquat which selectively accumulates in the lungs and is…
- Meningitis, aseptic Inflammation of the meninges that is not caused by bacterial infection. Viral meningitis is the most common…
- Hypertrophy, benign prostatic Abnormally elevated blood level of uric acid. Uric acid is a breakdown product of purines that are part of…
- Non-insulin-dependent diabetes Type 2 diabetes. See also Diabetes, type 2.
- Hormone replacement therapy (HRT) The combination therapy of estrogen plus progestogen, termed hormone replacement therapy (HRT). Estrogen…
- Gallstones and ERCP A mixture of microscopic particulate matter in bile, also called biliary sludge, that occurs when particles…
- Explant 1. The original meaning: to transfer tissue from the body and place it in a culture medium for growth; and…
- Septal defect, ventricular (VSD) A hole in the septum (the wall) between the lower chambers of the heart (the ventricles). Ventricular Septal…
- CT cell See: Cytotoxic T-lymphocyte
- Elastic fiber A slender fiber in connective tissue that is rich in the protein elastin and has an elastic quality