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'…
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Show more- Crossed embolism Passage of a clot (thrombus) from a vein to an artery. When clots in veins break off (embolize) , they travel…
- Acquired Anything that is not present at birth but develops some time later. In medicine, the word 'acquired' implies…
- Flu vaccine, nasal-spray See: Nasal flu vaccine
- Cancer, malignant melanoma A skin cancer that begins in cells called melanocytes that can grow together to form benign (not cancerous)…
- Bronchitis, chronic Defined clinically as a daily cough with production of sputum for 3 months, two years in a row. In chronic…
- Rale A type of abnormal lung sound heard through a stethoscope. Rales may be sibilant (whistling), dry (crackling)…
- Renal vein thrombosis Blood clot in the major vein that drains blood from the kidney
- Failure, autonomic See: Autonomic failure
- Cholera genome The genome of the bacterium called Vibrio cholerae that causes cholera. This genome contains over 4 million…
- Anatomical position The position with the body erect with the arms at the sides and the palms forward. The anatomical position is…
- Oromandibular dystonia Oro- refers to the mouth and mandibular refers to the lower jaw. Oromandibular dystonia affects the muscles…
- Major gene A gene that is necessary and sufficient by itself to cause a condition. For example, the APC gene is a major…