MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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).
Failure, adrenal
A condition in which the adrenal glands do not produce enough of the adrenal hormones that control important functions such as blood pressure. The adrenal glands sit on top of the kidneys. The adrenal is made up of an outer layer (the…
Read the definitionRandom terms
Show more- Perionychia An inflammation of the folds of tissue surrounding the nail due to infection. The infection may be bacterial…
- Cervix, incompetent A cervix that is abnormally liable to dilate and so is not competent to hold the fetus and keep it from being…
- Proximal myotonic myopathy See: Myotonic dystrophy type 2
- Open-angle glaucoma Glaucoma: Glaucoma in which the aqueous (fluid) that flows through the pupil into the anterior (front)…
- Dystonia musculorum deformans (DMD) Also called torsion dystonia, this is a fortunately rare, generalized dystonia (a state of abnormal -- either…
- Saphenous vein, small The smaller of the two saphenous veins, the principal veins that run up the leg superficially (near the…
- Occult stool blood test A test to check for hidden blood in the feces, the stool
- Nystagmus Rapid rhythmic repetitious involuntary (unwilled) eye movements. Nystagmus can be horizontal, vertical or…
- Case-to-infection ratio The ratio of the number of cases of a disease compared to the number of infections with the agent that causes…
- Urinary infection in children See: Urinary tract infection in children
- Baby teeth See: Primary teeth
- Primary liver cancer, adult A tumor in which the cancer starts during adulthood in cells in the liver. Also called hepatocellular…