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).
Pacemaker, natural
Pacemaker, natural: The natural pacemaker of the heart is the sinus node, one of the major elements in the cardiac conduction system, the system that controls the heart rate. This stunningly designed system generates electrical impulses…
Read the definitionRandom terms
Show more- Sopor Abnormally deep sleep, an unusually profound sleep, a stupor from which it is difficult to rouse a person…
- Buffalo chest A single chest cavity with no anatomic separation of the two hemithoraxes due, for example, to tension…
- Barbara McClintock See: McClintock, Barbara
- Lymphangiogram X-rays of the lymphatic system. A dye is injected to outline the lymphatic vessels and organs.
- Ventricular septal defect (VSD) Ventricular septal defect (VSD): A hole in the septum (the wall) between the lower chambers of the heart (the…
- Electrophoretic Pertaining to electrophoresis, the separation of molecules according to their size and electrical charge by…
- Backbone The spine. A flexible row of bones stretching from the base of the skull to the tailbone
- Primary liver cancer, adult A tumor in which the cancer starts during adulthood in cells in the liver. Also called hepatocellular…
- Typhus fever See: Typhus
- Contrast sensitivity, visual The ability to perceive differences between an object and its background
- Medicated stent See: Coated stent
- ABR (auditory brainstem response) Abbreviation for auditory brainstem response. See: ABR test