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).
Roentgen ray
Term coined around 1890 that preceded X-ray and is now synonymous with it. Named for Wilhelm Roentgen, a German professor of physics. Roentgen wanted to prove his hypothesis that cathode rays could penetrate substances besides air. When he…
Read the definitionRandom terms
Show more- Pathogenicity island The genetic element, the 'island of evil', within the genome of an organism that is responsible for its…
- Anaptic Suffering from an impaired sense of touch, (a state called anaphia) or tactile anesthesia. An anaptic person…
- Regulatory sequence A sequence of bases in DNA that controls gene expression
- Syndrome, economy class The formation of blood clots in veins deep within the legs -- deep vein thrombosis -- occurring during (or…
- Immunocow A cow that has been genetically engineered to produce human antibodies. An immunocow, when challenged with an…
- Coronary artery spasm A spasm (a sudden constriction) of one of the coronary arteries depriving the (myocardium (the heart muscle)…
- Disorder, social anxiety Excessive fear of embarrassment in social situations that is extremely intrusive and can have debilitating…
- EOG Electro-oculography. A type of electrophysiologic retinal testing
- Diabetic eye disease 1. A disease of the small blood vessels of the retina of the eye in people with diabetes. The vessels swell…
- Bypass An operation in which a surgeon creates a new tubular pathway for the movement of fluids and/or other…
- Sibling A brother or sister
- Warts, plantar Warts that grow on the soles of the feet. Plantar warts are different from most other warts. They tend to be…