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).
Macular hole
A hole in the macula, the tiny oval area made up of millions of nerve cells located at the center of the retina responsible for sharp, central vision. The eye contains a jelly-like substance called the vitreous. Shrinking of the vitreous…
Read the definitionRandom terms
Show more- Sigmoidoscope A thin lighted instrument used to view the inside of the rectum and lower colon
- Disease, Creutzfeldt-Jakob (CJD) A dementing disease of the brain. It is believed due to an unconventional (not a bacteria or virus)…
- Pertussis Pertussis: Whooping cough, a communicable, potentially deadly illness characterized by fits of coughing…
- RCT Randomized controlled trial
- Pneumopericardium Air or gas in the space between the heart and the pericardium, the membrane surrounding the heart.
- Diploid The number of chromosomes in most cells of the body. This number is 46 in humans. It is naturally twice the…
- Endoscopic gastrostomy, percutaneous (PEG) A surgical procedure for placing a feeding tube without having to perform an open laparotomy (operation on…
- Wolframin A protein encoded by a gene known as WFS1. Mutations in WFS1 are associated with Wolfram syndrome and also…
- Cataract, secondary A cataract that develops secondary to another disease or surgery. The other disease may, for example, be…
- Membranous glomerulonephritis See: Membranous nephropathy
- Multiple sclerosis Multiple sclerosis: Abbreviated MS. A disease of the central nervous system (CNS) marked by numbness…
- PTC (percutaneous transhepatic cholangiography) See: Cholangiography, percutaneous transhepatic