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).
Aortic insufficiency
Incomplete closure of the aortic valve resulting in aortic regurgitation, the return of blood from the aorta into the left ventricle of the heart
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- Medication, antibiotic A drug used to treat bacterial infections. The original definition of an antibiotic was a substance produced…
- Straitjacket Or strait-jacket or strait jacket. 1. A garment shaped like a jacket with long sleeves the ends of which can…
- Sleep start See: Hypnic jerk
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- Lumbar spinal stenosis Lumbar spinal stenosis: A condition whereby either the spinal canal (central stenosis) or vertebral foramen…
- Nephritis, acute Sudden inflammation of the kidney. Diagnosis is by finding blood or protein in the urine. There is often…
- Lycopene Lyme disease is a bacterial illness caused by a bacterium called a "spirochete." Lyme disease is spread by…
- Flavivirus encephalitis Encephalitis (inflammation of the brain) due to a flavivirus, a virus transmitted by a mosquito or tick…
- LCL (lateral collateral ligament) of the knee The knee joint is surrounded by a joint capsule with ligaments strapping the inside and outside of the joint…
- Sulfa drug One of the sulfonamides, the sulfa-related antibiotics which are used to treat bacterial and some fungal…