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).
Radionuclide
An unstable form of a chemical element that radioactively decays, resulting in the emission of nuclear radiation. Also called a radioisotope
Read the definitionRandom terms
Show more- SRY Sex region Y, a region on the Y chromosome that determines the sex of the individual. SRY is necessary and…
- Douching Using water or a medicated solution to clean the vagina. Vaginal douching has been done for many, many years…
- Catamenia Menstruation
- Martin Rodbell See: Rodbell, Martin
- Gastrointestinal stromal tumor GIST. A type of tumor that usually begins in cells in the wall of the gastrointestinal tract. It can be…
- Leukoencephalopathy with vanishing white matter White matter: An inherited brain disease that occurs mainly in children. and follows a chronic progressive…
- Aspiration, fine needle See Fine needle aspiration
- Dysplasia Abnormal in form. From the Greek dys- (bad, disordered, abnormal) and plassein (to form). For example…
- Medical school syndrome A form of acute hypochondriasis that affects most people in training to be a physician. For example, when…
- Tolerance A state in which a T cell can no longer respond to antigen. The T cell 'tolerates' the antigen. Also called…
- Deficiency, hex-A See: Tay-Sachs disease
- Open reading frame A long sequence of DNA that has no stop codon (no signal to stop reading) and therefore may encode part or…