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).
Pacemaker, artificial
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 (internally)…
Read the definitionRandom terms
Show more- Alpha linolenic acid See: Alpha-linolenic acid
- Left ventricle The left lower chamber of the heart that receives blood from the left atrium and pumps it out under high…
- Tympany A hollow drum-like sound produced when a gas-containing cavity is tapped sharply. Tympany is heard if the…
- Abiotrophy Loss of function or degeneration for reasons unknown. For example, cerebellar abiotrophy may affect…
- Electroshock therapy See Electroconvulsive therapy
- Virus, JC JC virus
- Annexin V Annexin V is the cause of a syndrome called the antiphospholipid antibody syndrome with abnormal blood…
- Stickler syndrome, type II See: Stickler syndrome
- Corneal ring, intrastromal A plastic ring designed to be implanted in the cornea, the transparent structure in the front of the eye. The…
- Facultative 1. In general, not obligatory but rather capable of adapting to different conditions. The opposite of…
- Antihistamines Drugs that combat the histamine released during an allergic reaction by blocking the action of the histamine…
- Affect The emotional tone a person expresses. A person's affect may be appropriate or inappropriate to the…