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).
Hydrocephaly
Also known as hydrocephalus, this is an abnormal buildup of cerebrospinal fluid (CSF) in the ventricles of the brain. The fluid is often under increased pressure and can compress and damage the brain. Hydrocephalus can arise before birth…
Read the definitionRandom terms
Show more- Yawn Involuntary opening of the mouth, often caused by suggestion. Yawning is characterized by breathing first…
- Infantile thiamine deficiency See: Infantile beriberi
- Cancer, adult primary liver A tumor in which the cancer starts during adulthood in cells in the liver. Also called hepatocellular…
- Electroencephalogram A study of electrical current within the brain. Electrodes are attached to the scalp. Wires attach these…
- Uricaciduria The presence of excess uric acid in the urine, which may be a sign of gout or kidney stones
- Norovirus A group of viruses that are a common cause of food poisoning and acute gastroenteritis ('stomach flu') that…
- Long-term memory A system for permanently storing, managing, and retrieving information for later use. Items of information…
- Effective dose The dose of a drug that will achieve the desired effect
- Molecular phylogenetics The determination of the rates and patterns of change occurring in DNA and proteins in order to reconstruct…
- Serositis Inflammation of the serous tissues of the body. The serous tissues line the lungs (pleura), heart…
- Ventricular arrhythmias Abnormal rapid heart rhythms (arrhythmias) that originate in the lower chambers of the heart (the…
- Brain aneurysm Brain aneurysm: A brain aneurysm is a small outpouching (an aneurysm) that looks like a berry and classically…