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 valve
One of the four valves in the heart, this valve is situated at exit of the left ventricle of the heart where the aorta (the largest of all arteries) begins. The aortic valve lets blood from the left ventricle be pumped up (ejected) into…
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Show more- Tap, joint (aspiration) A procedure whereby a sterile needle and syringe are used to drain joint fluid from the joint. This is…
- Noisome Offensive to the senses and especially disgusting, offensive, or harmful to the sense of smell. For example…
- ALT (alanine aminotransferase) An enzyme normally present in liver and heart cells that is released into the bloodstream when the liver or…
- Headache, tension A headache caused by contracting of the muscles in the back of the neck, on the scalp, and sometimes in the…
- Spin doctor Not a physician who is expert on dizzying conditions but someone who puts a spin on the news to manipulate…
- Disease, Creutzfeldt-Jakob (CJD) A dementing disease of the brain. It is believed due to an unconventional (not a bacteria or virus)…
- Sydenham chorea An acute neurologic disorder that emerges several months following a streptococcal ('strep') infection, most…
- Southern tick-associated rash illness A disease characterized by a rash like that in Lyme disease, recognized in the southeastern and south-central…
- McCune-Albright syndrome Abbreviation (not only for McDonald's but also) for a number of entities in medicine including minimal change…
- RSV Although several standard medical dictionaries indicate only that RSV stands for Rous sarcoma virus, RSV in…
- Patent urachus A birth defect involving the urachus, a canal connecting the bladder of the fetus with the allantois, a…
- Erythema multiforme See: Stevens-Johnson syndrome.