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).
ALT (alanine aminotransferase)
An enzyme normally present in liver and heart cells that is released into the bloodstream when the liver or heart is damaged. The blood ALT levels are elevated with liver damage (for example, from viral hepatitis) or with an insult to the…
Read the definitionRandom terms
Show more- Counter, Geiger See: Geiger counter
- Hippocratic Oath One of the oldest binding documents in history, the Oath written by Hippocrates is still held sacred by…
- Jejunostomy A surgical operation to create an opening of the jejunum (a part of the (a part of the small intestine) to a…
- Disease, new variant Creutzfeldt-Jakob Abbreviated nvCJD. A human disease thought due to the same infectious agent as bovine spongiform…
- Connexin A subunit of connexon, a protein that forms a gap junction, a channel that permits ions and small molecules…
- Dolor 1. Pain, one of the four classic signs of inflammation (together with calor, rubor and tumor). 2. By…
- Cancer, lymphoma, Hodgkin (adult) A type of lymphoma (cancer of the lymphatic system). The most common symptom of Hodgkin disease is a painless…
- Stomach flu So-called 'stomach flu' actually has nothing to do with the influenza (flu) virus. This term is sometimes…
- Salvage chemotherapy Chemotherapy given after recurrence of a tumor. See: Salvage therapy
- Chromatin modeling See: Chromatin remodeling
- Syndrome, superior vena cava The symptoms that result from compression of the large vein that carries blood down to the heart. The…
- ITN Insecticide-treated bednet. 'Provision of insecticide-treated bednets (ITNs) is universally accepted as an…