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).
Cation
In chemistry, a positively charged ion. Pronounced cat-I-on. A cation is as opposed to an anion, which is a negatively charged ion.
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Show more- Dr. Andrew Weil Dr. Andrew Weil is a physician and proponent of alternative medicine. Dr. Weil is the Director and founder of…
- Facioauriculovertebral sequence See: Goldenhar syndrome
- Polonies See: Polony
- Reflux surgery (fundoplication) A surgical technique that strengthens the barrier to acid reflux when the lower esophageal sphincter does not…
- CA 27-29 A tumor marker similar to the CA 15-3 that is found in the blood of most breast cancer patients. CA 27-29…
- CARDIA Study Coronary Artery Risk Development In Young Adults (CARDIA). A study designed to increase understanding of…
- Insulin resistance syndrome Insulin resistance syndrome: See: Metabolic syndrome
- Amniotic sac Popularly and more commonly known as the bag of waters. See: Bag of waters
- Rhabdomyosarcoma A malignant tumor that starts in muscle. Rhabdomyosarcoma is primarily a childhood tumor and occurs most…
- Atrial septal defect (ASD) A hole in the septum, the wall, between the atria, the upper chambers of the heart. Commonly called an ASD…
- Epidemic myalgia Also known as Bornholm disease, this is a temporary illness that is a result of virus infection. The disease…
- Sulphonylurea A triptan drug for the treatment of migraine. Marketed under the brand name Imitrex.