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).
Pyelo
Short for pyelonephritis, which is bacterial infection of the kidney. Pyelonephritis can be acute (sudden) or chronic (slow, subtle, and stubborn). It is most often due to the ascent of bacteria from the bladder up the ureters to infect…
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Show more- REM sleep Sleep: REM sleep is the portion of sleep when there are rapid eye movements (REMs). Dreams occur during REM…
- Amelanotic Without melanin. A skin lesion that is amelanotic lacks the pigment melanin and therefore is essentially…
- Tumor, primary See: Primary tumor
- Cell suicide See: Apoptosis
- Hypoxic-ischemic encephalopathy Damage to cells in the central nervous system (the brain and spinal cord) from inadequate oxygen…
- Chordae tendineae Thread-like bands of fibrous tissue which attach on one end to the edges of the tricuspid and mitral valves…
- Bacterial vaginosis Bacterial vaginosis: A vaginal condition characterized by an abnormal vaginal discharge due to an overgrowth…
- Hydrogen The most plentiful element in the universe and one present in all organic compounds. Hydrogen is a gas with…
- Aneurysm A localized widening (dilatation) of an artery, vein, or the heart. At the area of an aneurysm, there is…
- Reaction, allergic A reaction that occurs when the immune system attacks a usually harmless substance (an allergen) that gains…
- Fear of drinking alcohol An abnormal and persistent fear of drinking alcohol. Sufferers of this fear experience undue anxiety about…
- Lab result The result of a test done in a laboratory