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).
Megalencephaly
Also called macrencephaly, a condition in which there is an abnormally large, heavy, and usually malfunctioning brain. By definition, the brain weight is greater than average for the age and gender of the child. Head enlargement may be…
Read the definitionRandom terms
Show more- Corneal transplant The replacement of the clear window on the front of the eye (cornea) by a healthy cornea. The procedure is…
- Shock, vasogenic Shock caused by widening of the blood vessels, usually from medication
- Crick-Brenner experiment An elegant and important experiment performed in 1961 by Francis Crick and Sydney Brenner. The experiment…
- HIB immunization This immunization is designed to prevent diseases caused by Haemophilus influenzae type B (HIB), a bacteria…
- F (symbol) A much used symbol, F stands for fractional concentration; free energy; Fahrenheit; visual field; fluorine…
- Med-school syndrome See: Medical school syndrome
- Papilledema Swelling of the head of the optic nerve, a sign of increased intracranial pressure. The optic nerve head…
- Jaundice Jaundice: Yellow staining of the skin and sclerae (the whites of the eyes) by abnormally high blood levels of…
- Morbidity Illness, disease.
- Syncope, swallowing The temporary loss of consciousness upon swallowing. Syncope is the temporary loss of consciousness or, in…
- PMR (Polymyalgia Rheumatica) Polymyalgia Rheumatica: A disorder of the muscles and joints of older persons characterized by pain and…
- Elastin degrading enzyme See: Elastase