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).
Subaortic stenosis
Narrowing of the left ventricle of the heart just below the aortic valve through which blood must pass on its way up into the aorta. The narrowing cuts the flow of blood. Subaortic stenosis may be congenital (present at birth) or acquired…
Read the definitionRandom terms
Show more- Catalysis The process by which a substance speeds up a chemical reaction without being consumed or altered in the…
- Dysphoria Anxiety
- Osteochondroma An abnormal, solitary, benign growth of bone and cartilage, typically at the end of a long bone…
- Nocturnal enuresis Bedwetting at night. From the Greek 'enourin' meaning 'to urinate in.'
- Amyotrophic lateral sclerosis 2 ALS2. A juvenile-onset form of amyotrophic lateral sclerosis (ALS) inherited in an autosomal recessive manner…
- ODD syndrome Oculodentodigital dysplasia
- Heredofamilial tremor See: Essential tremor
- Silver poisoning Silver poisoning, medically termed argyria, causes ashen gray discoloration of the skin (and other tissues of…
- Immunization, DPT See: DPT immunization
- Body dysmorphic disorder Body dysmorphic disorder: A psychiatric disorder characterized by excessive preoccupation with imagined…
- Cardiopulmonary bypass Bypass of the heart and lungs as, for example, in open heart surgery. Blood returning to the heart is…
- Physiologic jaundice of the newborn Although there can be a diversity of physiologic stress tests, this refers here to a physiologic cardiac…