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).
Porencephaly
A disorder of the central nervous system involving a cyst or cavity in a cerebral hemisphere of the brain. The cysts or cavities are usually the remnants of destructive lesions, but are sometimes the result of abnormal development. The…
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Show more- Lethal gene, zygotic A gene that is lethal (fatal) for the zygote, the cell formed by the union of a sperm (male sex cell) and an…
- Appendiceal rupture Rupture of appendix
- Toxin, anthrax The toxic substance secreted by the bacterium Bacillus anthracis, the causative agent of the disease anthrax…
- NLM (National Library of Medicine) The world's largest medical library, the U.S. National Library of Medicine (NLM) is part of the National…
- Bronchi The large air tubes leading from the trachea to the lungs that convey air to and from the lungs. The bronchi…
- Sepsis, neonatal A serious blood bacterial infection in an infant less than 4 weeks of age. Babies with sepsis may be…
- Onychomycosis Onychomycosis: Fungal infection of the nails. Fungal infections can involve either the toenails or the…
- Depression, major Depression, major: A disease that interferes with the ability to work, sleep, eat, and enjoy once pleasurable…
- Areola 1. The small darkened area around the nipple of the breast. 2. The colored part of the iris around the pupil…
- Hydrocephalus, congenital Hydrocephalus present at birth
- Pasteurization A method of treating food by heating it to a certain point to kill pathogenic (disease-causing) organisms but…
- Headache, stress See headache, tension