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).
Vitamin A deficiency
Deficiency of niacin, one of the B-complex vitamins, causes pellagra. See: Pellagra.
Read the definitionRandom terms
Show more- Romano-Ward syndrome See: Long QT syndrome
- Agonist A drug that binds to a receptor of a cell and triggers a response by the cell. An agonist often mimics the…
- Olefactory Common misspelling of olfactory
- Vidian neuralgia A distinctive syndrome of headaches, better known today as cluster headache. There are two main clinical…
- Artery, mesenteric One of the arteries that arises from the abdominal portion of the aorta and distributes blood to most of the…
- Ovary, dermoid cyst of the A bizarre tumor, usually benign, in the ovary that typically contains a diversity of tissues including hair…
- Pharmaco-epidemiology The study of the use of drugs in society. The process of identifying and responding to safety issues about…
- HHV-3 Human herpesvirus 3. See herpes zoster.
- Body type A somewhat old-fashioned term used to classify the human shape into three primary types: ectomorphic…
- Deficiency, UROD See: UROD deficiency
- Alcoholism Physical dependence on alcohol to the extent that stopping alcohol use will bring on withdrawal symptoms. In…
- KB 1. The skin disease Keratodermia blennorrhagicum. 2. Kilobase of DNA. The preferred abbreviation for kilobase…