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).
Sinoatrial node
The sinoatrial node (the SA node) is one of the major elements in the cardiac conduction system, the system that controls the heart rate. This stunningly designed system generates electrical impulses and conducts them throughout the muscle…
Read the definitionRandom terms
Show more- Duane retraction syndrome See: Duane syndrome
- Biology, molecular See: Molecular biology
- Angioplasty Procedure with a balloon-tipped catheter to enlarge a narrowing in a coronary artery. Also called…
- Hypothalamus The area of the brain that controls body temperature, hunger, and thirst
- Systolic The blood pressure when the heart is contracting. It is specifically the maximum arterial pressure during…
- Forensics, DNA DNA:See: DNA forensics
- Teratoma A type of germ cell tumor that may contain several different types of tissue and sometimes mature elements…
- Growth hormone A hormone made in the pituitary gland that stimulates the release of another hormone called somatomedin by…
- Appendiceal rupture Rupture of appendix
- Sagittal A crucial large vein that goes over the top of the skull from front to back and then splits to take blood…
- Microtubule motor See: Microtubule motor protein
- MCP Membrane cofactor protein. A ubiquitous protein on the surface of cells that regulates complement and is…