MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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).
Parasympathetic nervous system
A part of nervous system that serves to slow the heart rate, increase the intestinal and gland activity, and relax the sphincter muscles. The parasympathetic nervous system, together with the sympathetic nervous system (that accelerates…
Read the definitionRandom terms
Show more- Assistant in dying See: Doula (the second meaning)
- Sartorius muscle The long band of muscle that stretches from the calf to the pelvis. It moves the thigh and, by extension, the…
- Triglyceride test Triglyceride test: A simple blood test to measure the level of triglycerides in the blood. Triglyceride…
- Urinalysis Urinalysis: A test that determines the content of the urine. Because urine removes toxins and excess liquids…
- Captioning The text display of spoken words, presented on a movie screen or a television (or another type of monitor)…
- Promoter In molecular biology, a site on DNA to which the enzyme RNA polymerase can bind and initiate the…
- Disease, rotator cuff Damage to the rotator cuff, a group of four tendons that stabilize the shoulder joint and move the shoulder…
- Riot control agent poisoning Poisoning by an irritant agent that belongs to a class of agents collectively known as riot control agents or…
- Recurrence risk In medical genetics, the recurrence risk is the chance that a genetic (inherited) disease present in the…
- Magnetic resonance spectroscopic imaging (MRSI) A noninvasive imaging method that provides information about cellular activity (metabolic…
- Acromioclavicular joint The acromioclavicular (AC) joint is located between the acromion (a projection of the scapula that forms the…
- Hematoma, extradural See: Epidural hematoma