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).
Contraction
The tightening and shortening of a muscle
Read the definitionRandom terms
Show more- Occupational disease A disease due to a factor in a person's occupation. For example, lung disease in miners. Occupational…
- Disease, adult celiac This condition results from an immune (allergic) reaction to gluten, a protein found in wheat and related…
- Red-green colorblindness A form of colorblindness in which red and green are perceived as identical. This is the most common type of…
- Ubidecarenone See: Coenzyme Q10
- Marijuana Marijuana: A very common street and recreational drug that comes from the marijuana plant. The plant that…
- Dwarfism, thanatophoric A form of short-limbed (micromelic) dwarfism that usually causes death within the first few hours after…
- Duane retraction syndrome See: Duane syndrome
- Visual acuity test This test measures how well you see at various distances. It is the familiar eye chart test. The eye chart…
- Transitional cell carcinoma A type of cancer that develops in the lining of the renal pelvis, ureter or bladder
- Alcohol Abuse and Alcoholism, National Institute One of the National Institutes of Health, NIAAA's mission is to 'conduct research focused on improving the…
- Attention deficit hyperactivity disorder Der=0> ODYvAlign=top bgColor=#cccccc colSpan=2> vAlign=top width='100%' bgColor=#ffffff>Our Attention deficit…
- Error of the second kind See: Error, beta