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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Sinus tachycardia
A fast heartbeat (tachycardia) because of rapid firing of the sinoatrial (sinus) node. The sinoatrial (or sinus) node is the natural pacemaker of the heart. It is located in the wall of the right atrium (the right upper chamber of the…
Read the definitionRandom terms
Show more- Cogan syndrome Arteritis (also referred to as vasculitis) that involves the ear. This condition is called Cogan syndrome…
- Varix An enlarged and convoluted vein, artery or lymphatic vessel.
- PVS Pigmented villonodular synovitis
- Nodule, Heberden A small hard fixed bump on the finger, usually at the last joint of the finger. A Heberden nodule is a…
- CABG Coronary artery bypass graft; and Coronary artery bypass grafting
- Sea poisoning An intensely itchy rash due to contact with the tiny thimble jellyfish (Linuche unguiculata). These jellyfish…
- Jealousy, delusional See: Othello syndrome
- Succenturiate placenta An extra placenta separate from the main placenta. In anatomy 'succenturiate' means substituting for or…
- Speculum An instrument used to widen an opening to look within a passage or a cavity. For example, a speculum may be…
- Endoscopic sphincterotomy An operation to cut the muscle between the common bile duct and the pancreatic duct. The operation uses a…
- Pharmacist A professional who fills prescriptions, and in the case of a compounding pharmacist, makes them. Pharmacists…
- Cervical vertebra, first The first cervical (neck) vertebra is called the atlas. It supports the head. The atlas bone is named for the…