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).
Hepatitis, non-A, non-B
The old name for hepatitis C when the causative virus had not been identified but it was known not to be hepatitis A or B
Read the definitionRandom terms
Show more- Catheter, hemodialysis A venous catheter used for hemodialysis (dialysis of the blood). A hemodialysis catheter is a type of central…
- Disease, Osgood-Schlatter Disease, Osgood-Schlatter: A condition involving inflammation and sometimes tearing of ligaments within the…
- Cancer, thyroid See: Thyroid cancer
- Beau lines See: Beau's lines
- Index case A person who first draws attention to their family. For example, if my eye doctor discovers I have glaucoma…
- Titre Variant spelling of 'titer' -- the degree of dilution of a substance such as an antibody, reflecting the…
- Thoracic duct A vascular structure which recirculates lymph into the blood stream. It begins in the abdomen and tracks…
- Veins, ophthalmic The orbital cavity is drained by paired veins called the superior and inferior ophthalmic veins. The superior…
- CEA See carcinoembryonic antigen
- Nostrum A worthless remedy. 'Nostrum' is an example of a term that came from medicine, entered the world beyond…
- Ephelis A form of freckle. A flat red or light-brown spot on the skin that typically appears during the sunny months…
- Supplies kit, disaster You and your family can cope best by preparing for disaster before it strikes. One way to prepare is by…