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).
Ascorbic acid
Vitamin C, an essential nutrient found mainly in fruits and vegetables. The body requires it to form and maintain bones, blood vessels, and skin. Like other vitamins, ascorbic acid is an organic compound. An organic compound is a substance…
Read the definitionRandom terms
Show more- Keratoplasty Corneal transplant.
- New Engl J Med The New England Journal of Medicine
- Rectouterine pouch >Culdoscopy, the introduction of an endoscope through the vagina into the cul-de-sac; >Culdoscope, the…
- Extracorporeal membrane oxygenation (ECMO) A life support system that circulates the blood through an oxygenating system. ECMO is like a…
- Blood-brain barrier A protective network of blood vessels and cells that filters blood flowing to the brain.
- Headache, vascular A group of headaches felt to involve abnormal sensitivity of the blood vessels (arteries) in the brain to…
- Deltoid An adjective and a noun. Adjective: In the shape of delta, the fourth letter in the Greek alphabet. A capital…
- Defensin A family of potent antibiotics made within the body by neutrophils (a type of white blood cell) and…
- Internal ear There are three sections of the ear. They are the external ear, the middle ear, and the internal ear. The…
- BPPV (benign paroxysmal positional vertigo) A balance disorder that results in the sudden onset of dizziness, spinning, or vertigo when moving the head
- Chronic disease A disease that persists for a long time. A chronic disease is one lasting 3 months or more, by the definition…
- B cell A type of white blood cell and, specifically, a type of lymphocyte. Many B cells mature into what are called…