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).
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- Integron A mobile DNA element that can capture and carry genes, particularly those responsible for antibiotic…
- Recalcitrant Stubborn. For example, a recalcitrant case of pneumonia stubbornly resists treatment
- Alveolar proteinosis See: Pulmonary alveolar proteinosis
- Xeno- (prefix) Foreign or other. As in: > >Xenoantigen -- An antigen that is found in more than one species. >Xenograft -- A…
- Periodontal disease A bacterial infection that destroys the attachment fibers and supporting bone that hold the teeth in the…
- Microscope An optical instrument that augments the power of the eye to see small objects. The name microscope was coined…
- Pollinosis 1. Hay fever in response to pollen. 2. Hay fever in response to any allergen. See: Hay fever.
- Dracunculiasis A parasitic disease caused by the largest parasite that plagues people and bores into their tissues -- the…
- Ankle sprain A common musculoskeletal injury in which the ligaments of the ankle partially or completely tear due to…
- FGFR2 A mutation (change) in the fibroblast growth factor receptor 2 (FGFR2) gene on chromosome 10 causes the…
- Selenium An essential trace mineral that functions largely in the form of proteins, called selenoproteins, which act…
- Asplenic Pertaining to asplenia, the state of being without a spleen or without a functional spleen. The spleen can be…