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).
Chancre
The classic painless ulcer of syphilis. The chancre forms in the first (primary) stage of syphilis. It is highly contagious and can last 1-5 weeks. The disease can be transmitted from contact with the ulcer, which is teeming with…
Read the definitionRandom terms
Show more- Measly tapeworm Taenia solium
- Breast cancer, male Breast cancer in a man. Male breast cancer is much less common than breast cancer in women. Fewer than 1% of…
- Arcus senilis A cloudy opaque arc or circle around the edge of the eye, often seen in the eye of the elderly.
- Acute leukemia Leukemia: Cancer of the white blood cells (leukemia) that characteristically comes on abruptly and, if not…
- PA (physician assistant) >Medical histories and physical examinations: a PA is usually can perform histories and physical examinations…
- Beers criteria Criteria for safe medication use in older adults -- for people over 65 years of age. First issued in 1991…
- Central fovea See: Fovea.
- Radiation fibrosis Scarring of the lungs from radiation. Radiation fibrosis is a sequel of radiation pneumonitis (inflammation…
- Atropine psychosis A syndrome characterized by dry mouth, blurred vision, forgetfulness, and difficulty with urination triggered…
- Lymphoma, intermediate-grade See: Low-grade lymphoma.
- Hereditary amyotrophic lateral sclerosis See: Familial ALS
- Perfluorooctanoic acid PFOA. See: Perfluorinated acid