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).
Duct
A passage or a tube with well-defined walls suitable for the conveyance of air or liquids, as the bile duct and the pancreatic duct. Duct is a contraction of the New Latin word ductus. The Romans, however, used the word canalis to…
Read the definitionRandom terms
Show more- Nidus The Latin word for 'nest', nidus is used in medicine to refer to any structure that resembles a nest in…
- Tom- Or tomo- before a consonant. A combining form meaning a cut, section, slice or layer, as might be achieved by…
- Penicillin-resistant bacteria Bacteria that are unaffected by penicillin. Such organisms can sometimes be killed using sulfa drugs…
- Hydrocephalus ex-vacuo Hydrocephalus ex-vacuo: What is termed 'hydrocephalus ex-vacuo' occurs when there is damage to the brain…
- Otic barotrauma Middle ear problems due to changing atmospheric pressures, as when a plane descends to land. The problems…
- External genitalia, male See: Male external genitalia
- Node, sentinel lymph The first lymph node ('gland') to receive lymphatic drainage from a tumor. Which lymph node is the sentinel…
- Coronary insufficiency Insufficient blood flow through one or more coronary arteries
- Varicose veins Varicose veins: See: Varicose vein.
- Paroxysmal sleep Sleep: A neurological disorder marked by a sudden recurrent uncontrollable compulsion to sleep. Also known as…
- ODD syndrome Oculodentodigital dysplasia
- Vascular hemophilia See: Von Willebrand disease