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).
Pathognomonic
A sign or symptom that is so characteristic of a disease that it makes the diagnosis. For example, Koplik's spots (on the buccal mucosa opposite the lst and 2nd upper molars) are pathognomonic of measles. The word 'pathognomonic'…
Read the definitionRandom terms
Show more- ACE inhibitors ACE inhibitors: A drug that inhibits ACE (angiotensin converting enzyme) which is important to the formation…
- Faciogenital dysplasia See: Aarskog-Scott syndrome
- Disease, Keshan See Keshan disease
- Defibrillator A device used to correct a dangerously abnormal heart rhythm, usually ventricular fibrillation, or to restart…
- Segawa dystonia Dystonia: An important variant form of dopa-responsive dystonia (DRD). DRD typically begins in childhood or…
- Gray baby syndrome A syndrome due to toxicity of the antibiotic chloramphenicol in the newborn, especially the premature…
- Stiff baby syndrome A genetic disorder also known as hyperexplexia in which babies have an exaggerated startle reflex (reaction)…
- CST3 The gene for cystatin C
- Periaortic Around the aorta. The aorta is the great artery that comes from the left ventricle of the heart and delivers…
- Heart, Lung, and Blood Institute, National BI): One of the National Institutes of Health in the U.S., the NHLBI's mission is to 'provide leadership for…
- Embolism, pulmonary The obstruction of the pulmonary artery or a branch of it leading to the lungs by a blood clot, usually from…
- Genetic discrimination The potential use of genetic information to discriminate against people in the workplace, in health…