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).
Irradiation
The use of high-energy radiation from x-rays, gamma rays, neutrons, and other sources to kill cancer cells and shrink tumors. Radiation may come from a machine outside the body (external-beam radiation therapy) or from materials called…
Read the definitionRandom terms
Show more- Adenomyoma A nodule that forms around tissue of the inner uterus (endometrial tissue) as a result of adenomyosis. See…
- Arteriosclerotic aneurysm A localized widening (aneurysm) of a vessel that occurs because the vessel wall is weakened by…
- Syndrome, Pallister-Killian Condition with multiple malformations at birth and mental retardation due to isochromosome 12p mosaicism (an…
- Sodium The major positive ion (cation) in fluid outside of cells. The chemical notation for sodium is Na+. When…
- Syndrome, Menkes See: Menkes syndrome
- Antibacterial Anything that destroys bacteria or suppresses their growth or their ability to reproduce. Heat, chemicals…
- Agenesis, sacral Failure of formation of all or part of the sacrum (the lowest section of the spine). Currarino syndrome is a…
- Palate, hard The bony part of the roof of the mouth. The hard palate is just in front of the soft palate
- Cancer, breast, familial A number of factors have been identified that increase the risk of breast cancer. One of the strongest of…
- A- See: A-
- Semen The fluid that is released through the penis during orgasm. Semen is made up of fluid and of sperm. The fluid…
- Vesicles In dermatology, vesicles are small blisters, most often on the skin. Vesicles also can crop up on the mucous…