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).
Therapy, external beam radiation
Radiation focused from a source outside the body on the affected area (for example, the cancer) within the body, much like getting a diagnostic x-ray, but for a longer period of time
Read the definitionRandom terms
Show more- Youth The time between childhood and maturity. (Unfortunately, as the songwriter Sammy Cahn noted, 'youth is wasted…
- Syndrome, congenital rubella The constellation of abnormalities caused by infection with the rubella (German measles) virus before birth…
- Currarino syndrome Failure of formation of all or part of the sacrum (the lowest section of the spine). Currarino syndrome is a…
- DYS Symbol for familial dysautonomia. See: Familial dysautonomia.
- Coprolith See: Fecalith
- Single palmar flexion crease See: Simian crease
- Pancreas, artificial A machine that constantly measures glucose (sugar) in the blood and, in response to an elevated level of…
- Osteocyte A bone cell
- Pyrosis A technical term for what is popularly called heartburn, a burning sensation in the upper abdomen. In many…
- Sever condition Sever condition: Inflammation of the growth plate of the calcaneus, the bone at the back of the heel. The…
- Periosteum The periosteum is a dense membrane composed of fibrous connective tissue that closely wraps (invests) all…
- Doxorubicin cardiomyopathy Brand name: Vibramycin. A synthetic broad-spectrum antibiotic derived from tetracycline. Doxycycline is used…