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).
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- Sinus rhythm The normal regular rhythm of the heart set by the natural pacemaker of the heart called the sinoatrial (or…
- Congenital synostosis of cervicothoracic vertebrae See: Klippel-Feil sequence
- Stickler syndrome, type II See: Stickler syndrome
- Burkitt's lymphoma See: Burkitt lymphoma
- Chronic myelogenous leukemia Chronic inflammation of the skin lining the external ear canal leading to the ear drum. Can be caused by a…
- Kinsey Report A report entitled 'Sexual Behavior in the Human Male' published by Alfred Charles Kinsey's in 1948 that…
- Exon The region of a gene that contains the code for producing protein. Each exon codes for a specific portion of…
- Inverted repeat A sequence of nucleotides in the DNA that is identical to another except that it has been reversed (inverted)…
- Absence of the nipple Medically called athelia, this is a rare condition but it is common in certain conditions. Athelia tends to…
- Cardiology The study and treatment of heart disorders
- Restriction endonuclease An enzyme from bacteria that can recognize specific base sequences in DNA and cut (restrict) the DNA at that…
- Menstruation, cessation of Menstruation, cessation of: Menstruation ends naturally in middle age with the onset of the menopause. It can…