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).
Narcotic
1. A drug that causes insensibility or stupor. A narcotic induces narcosis, from the Greek 'narke' for 'numbness or torpor.'2. A drug such as marijuana which is subject to regulatory restrictions comparable to those for addictive narcotics
Read the definitionRandom terms
Show more- Bug, kissing See: Kissing bug
- Obstetrician/gynecologist An obstetrician is a physician who delivers babies and is in the practice of obstetrics while a gynecologist…
- Rate, infant mortality The number of children dying under a year of age divided by the number of live births that year. The infant…
- Physician assisted suicide See: Physician-assisted suicide
- Monte Carlo simulation A statistical method used in biomedical research, involving computer simulation in which data are randomly…
- Christian Boehmer Anfinsen, Jr. See: Anfinsen, Christian Boehmer, Jr.
- Idiopathic sclerosing cholangitis See: Primary sclerosing cholangitis
- ARM Abbreviation of age-related maculopathy, any pathologic condition of the macula, the small spot in the retina…
- Percutaneous transhepatic cholangiography PTCA. The use of a balloon-tipped catheter to enlarge a narrowed artery.
- Tunica albuginea of the testis The layer of dense whitish inelastic tissue that surrounds the testis
- Fear of blood An abnormal and persistent fear of blood. Sufferers of this very common phobia dread the sight of their own…
- Ketone body A chemicals that the body makes when there is not enough insulin in the blood and it must break down fat…