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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Defect, enzyme
An abnormality in the protein (enzyme) important in catalyzing a normal biochemical reaction in the body. Disorders result from a deficiency (or functional abnormality) of an enzyme. Archibald Garrod in 1902 was the first to attribute a…
Read the definitionRandom terms
Show more- Cardiomyopathy Disease of the heart muscle (the myocardium). From the Greek roots: 'cardio-', heart + 'mys', muscle +…
- Fever, quintan Fever, quintan: Quintan means recurring every 5 days, the characteristic duration of trench fever. Quintan or…
- Saddle gall A sore on a horse caused by an ill-fitting saddle. Also called a saddle sore
- Renal syndrome with hemorrhagic fever A number of diseases characterized by an abrupt onset of high fever and chills, headache, cold and cough, and…
- Stroke, National Institute Neurological Disorders Nd (NINDS): One of the National Institutes of Health in the U.S., the NINDS's mission is to 'support and…
- ZIP code, protein An informal name for a molecular cell biology system of signals or 'address tags' that guide the movement of…
- Bell's palsy Paralysis of the facial nerve, the nerve that supplies the facial muscles on one side of the face. Bell's…
- Male breast cancer Male breast cancer: See: Breast cancer, male.
- Tinea unguium >People with diabetes; >People with disease of the small blood vessels (peripheral vascular disease); and…
- Medicare Part B The Medicare program that covers physician and outpatient services. Medicare is the United States…
- Smallpox vaccine A vaccine containing a live virus called vaccinia used to prevent smallpox. The vaccine does not contain the…
- Rickets A disease of infants and children that disturbs normal bone formation (ossification). Rickets is a failure to…