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).
Arrhythmia
An abnormal heart rhythm. In an arrhythmia the heartbeats may be too slow, too rapid, too irregular, or too early. Rapid arrhythmias (greater than 100 beats per minute) are called tachycardias. Slow arrhythmias (slower than 60 beats per…
Read the definitionRandom terms
Show more- Interleukin-2 A type of interleukin, a chemical messenger, a substance that can improve the body's response to disease. It…
- Seizure, partial See: Partial seizure
- Heel spur A bony spur projecting from the back or underside of the heel that often makes walking painful. Spurs at the…
- Surgery, fetal The surgical treatment of the fetus before birth. Also called prenatal or antenatal surgery. Fetal surgery is…
- Fever with renal syndrome, hemorrhagic A set of diseases, also known as hemorrhagic fever, characterized by the abrupt onset of high fever and…
- Shunt 1) To move a body fluid, such as cerebrospinal fluid, from one place to another. 2) A catheter (tube) that…
- Cyto (combining form) Rm denoting a cell. Derived from the Greek 'kytos' meaning 'hollow, as a cell or container.' From the same…
- Osteotomy, block Surgical removal a section of bone
- Lymphatic filariasis A parasitic disease caused by the African eye worm, a microscopic thread-like worm. The adult worms can only…
- Male organs of reproduction >The male external genitalia -- the penis, the male urethra, and the scrotum; and >The male internal…
- Scan, spiral CAT A conventional computerized axial tomography scan (CAT scan or CT scan) is an x-ray procedure which combines…
- Care, managed See: Managed care