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).
Internal pacemaker
Pacemaker: A device that uses electrical impulses to regulate the heart rhythm or to reproduce that rhythm. An internal pacemaker is one in which the electrodes into the heart, the electronic circuitry and the power supply are implanted…
Read the definitionRandom terms
Show more- Placebo-controlled A term used to describe a method of research in which an inactive substance (a placebo) is given to one group…
- Single upper palm line See: Simian crease
- Vena cava The superior vena cava is the large vein which returns blood to the heart from the head, neck and both upper…
- IL-1 Interleukin-1
- Calabresi, Paul Italian-born American oncologist who was a leader in developing and testing drugs to treat Hodgkin's…
- Psychosis, schizophrenia The most chronic and disabling of the major mental illnesses. Schizophrenia may be one disorder, or it may be…
- NAME syndrome Acronym for Nevi, Atrial myxoma, Myxoid neurofibroma, and Ephelides. Now included in the Carney complex. See…
- Endoscopic papillotomy See: Endoscopic sphincterotomy
- D & C Dilatation and curettage, a minor operation in which the cervix is expanded enough (dilatation) to permit the…
- Branchial cleft cyst Also called a branchial cyst, this is a cavity that is a remnant from embryologic development present at…
- Alpha error The statistical error (said to be 'of the first kind' or type I) made in testing an hypothesis when it is…
- Allogeneic Taken from different individuals of the same species. Two or more individuals are said to be allogeneic to…