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).
Pericardial tamponade
A life-threatening situation in which there is such a large amount of fluid (usually blood) inside the pericardial sac around the heart that it interferes with the performance of the heart. The end result, if untreated, is low blood…
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Show more- Neuropathy, hypoglossal See: Hypoglossal neuropathy
- Lassa virus The deadly cause of Lassa fever. Lassa virus is a virulent and highly transmissible RNA virus that belongs to…
- TPH2 Tryptophan hydroxylase 2, also known as neuronal tryptophan hydroxylase (NTPH), the key rate-limiting enzyme…
- Bi- Prefix meaning two, as in biceps or bicuspid
- Left ventricle The left lower chamber of the heart that receives blood from the left atrium and pumps it out under high…
- APC (medication) Aspirin, phenacetin, and caffeine (a pill containing all three)
- Myelinization The formation of the myelin sheath around a nerve fiber. Also known as myelination
- Nuclei, basal A region located at the base of the brain composed of 4 clusters of neurons, or nerve cells. This area of the…
- Optic disc The circular area in the back of the inside of the eye where the optic nerve connects to the retina. Also…
- Transdifferentiation An instrument that converts electrical energy into mechanical energy. A transducer can also act as a…
- Intra-arterial pressure The pressure of the blood within an artery, the arterial pressure. Also called the arterial tension
- Vertebral compression fracture One of the last two ribs. A rib is said to be "vertebral" if it does not attach to the sternum (the breast…