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).
Anal fistula
An opening in the skin near the anus that leads into a blind pouch or may connect through a tunnel with the rectal canal
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Show more- Seasonal affective disorder (SAD) See: SAD.
- Isoflavone A type of plant estrogen (phytoestrogen) found chiefly in soybeans
- Asystole A dire form of cardiac arrest in which the heart stops beating -- there is no systole -- and there is no…
- Unilateral Having, or relating to, one side. Unilateral is as opposed, for example, to bilateral (which means having, or…
- Niacin for high cholesterol Niacin or nicotinic acid, one of the water-soluble B vitamins, given to lower cholesterol. Nicotinic acid…
- Veins, ophthalmic The orbital cavity is drained by paired veins called the superior and inferior ophthalmic veins. The superior…
- Radiation therapy Radiation therapy: The use of high-energy rays to damage cancer cells, stopping them from growing and…
- Nutraceutical A food or part of a food that allegedly provides medicinal or health benefits, including the prevention and…
- Hypocapnia Less than the normal level of carbon dioxide in the blood. Hypoapnia is the opposite of hypercapnia. The…
- Gerstmann-Straussler-Scheinker syndrome A rare familial form of progressive dementia inherited in an autosomal dominant manner due to a mutant prion…
- Fever, quintan Fever, quintan: Quintan means recurring every 5 days, the characteristic duration of trench fever. Quintan or…
- Syndrome, Stein-Leventhal >Irregular or no periods >Acne >Obesity, and >Excess hair growth. All women with PCO have irregular or no…