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).
Cerebral cortex
A thin mantle of gray matter about the size of a formal dinner napkin covering the surface of each cerebral hemisphere. The cerebral cortex is crumpled and folded, forming numerous convolutions (gyri) and crevices (sulci). It is made up of…
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Show more- Accessory digestive organ An organ that helps with digestion but is not part of the digestive tract. The accessory digestive organs are…
- Anti-reflux surgery (fundoplication) A surgical technique that strengthens the barrier to acid reflux when the lower esophageal sphincter does not…
- Gerascophobia An abnormal and persistent fear of growing old. Sufferers of this fear experience undue anxiety about aging…
- Turner syndrome Turner syndrome: A chromosome disorder in females that is characterized by the absence of all or part of a…
- Air bag A bag that fills with air, designed for frontal impact crashes, the kind of crashes which account for more…
- Kiddiecam See: Kiddie cam
- Calcitriol The active form of vitamin D. Calcitriol is formed in the kidneys or made in the laboratory. It is used as a…
- Muscle, papillary Small muscles within the heart that anchor the heart valves. The anchor ropes are the chordae tendineae…
- Resveratrol An antioxidant present in many plants. Resveratrol is a type of polyphenol called a phytoalexin, a class of…
- Syndrome, Stevens-Johnson A genetic disorder also known as hyperexplexia in which babies have an exaggerated startle reflex (reaction)…
- Ocular histoplasmosis syndrome An eye disease that is a leading cause of vision loss, due to the spread of spores of the fungus Histoplasma…
- Melatonin A hormone produced by the pineal gland, melatonin is intimately involved in regulating the sleeping and…