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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Methadone
A synthetic opiate. The most common medical use for methadone is as a legal substitute for heroin in treatment programs for drug addiction. It is usually administered to participating addicts daily in the form of a green, tasteless liquid…
Read the definitionRandom terms
Show more- Eosinophilic fasciitis (Shulman syndrome) A disease which leads to inflammation and thickening of the skin and fascia. (The fascia is a lining tissue…
- Nosebleed Nosebleed: Its medical name is epistaxis.
- Immunization, HIB This immunization is designed to prevent diseases caused by Haemophilus influenzae type B (HIB), a bacteria…
- Hypothyroidism, congenital Hypothyroidism, congenital: Underactivity of the thyroid gland at birth, resulting in growth retardation…
- Therapy, electroshock See Electroconvulsive therapy
- DMD (dystonia musculorum deformans) Also called torsion dystonia, this is a rare, generalized dystonia (a state of abnormal -- either excessive…
- Enterostomy A surgical operation that opens the small intestine and brings it through the abdominal wall to create a new…
- Fruit fly Scientifically known as Drosophila melanogaster. A favorite organism in genetics and biology research since…
- Contact eczema, allergic Also called allergic contact dermatitis, this is a red, itchy, weepy reaction where the skin has come into…
- Bones of the arm, wrist and hand There are 64 bones in the upper extremity. They consist of 10 shoulder and arm, 16 wrist and 38 hand bones. >…
- Spinal muscular atrophy A genetic disease characterized by progressive loss of lower motor neurons (anterior horn cells) in the…
- Aortic aneurysm An outpouching (a local widening) of the largest artery in the body, the aorta, involving that vessel in its…