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).
Heroin
Semisynthetic drug derived from morphine. Discovered in 1874, it was introduced commercially in 1898 by the Bayer company in Germany. The name heroin was coined from the German heroisch meaning heroic, strong. Heroin is stronger (more…
Read the definitionRandom terms
Show more- NCS Nerve conduction study. See: Nerve conduction velocity test
- Plummer-Vinson syndrome Iron deficiency anemia, esophageal webs, and dysphagia (difficulty swallowing). The iron deficiency is…
- NINDS Stands for the National Institute of Neurological Disorders and Stroke, one of the National Institutes of…
- FluMist FluMist™. See: Nasal flu vaccine
- Chromosome map A chromosome (one of the microscopically visible carriers of the genetic material DNA) with its centromere…
- Central At or near the center. In anatomy and medicine (as elsewhere), central is the opposite of 'peripheral' which…
- Pachydactyly Thick fingers or toes. A feature, for example, of neurofibromatosis. From the Greek pachys, thick + daktylos…
- Anomaly, congenital Anomaly, congenital: A birth defect. A malformation that occurs before birth and is present at birth
- Neuropathy, accessory See: Accessory neuropathy
- Lab Short for a laboratory (or a Labrador retriever)
- Antiphospholipid antibody syndrome Antiphospholipid antibody syndrome (APLS): An immune disorder characterized by the presence of abnormal…
- HGD The gene encoding an enzyme called homogentisate 1,2-dioxygenase (also known as homogentisate oxidase). HGD…