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).
Affect
The emotional tone a person expresses. A person's affect may be appropriate or inappropriate to the situation. One type of inappropriate affect is a flat affect or blunted affect, a common feature of schizophrenia
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Show more- Syndrome, Reye A sudden, sometimes fatal, disease of the brain (encephalopathy) with degeneration of the liver, occurs in…
- Ague A fever (such as from malaria) that is marked by paroxysms of chills, fever, and sweating recurring regular…
- Osler, Sir William Renowned Canadian physician (1849-1919) who taught at McGill University, the University of Pennsylvania…
- Supernumerary digit An extra finger or toe
- Valve, aortic One of the four valves in the heart, this valve is situated at exit of the left ventricle of the heart where…
- Acid reflux A common condition and an abnormal one in which acid in the stomach rises up into the esophagus. This occurs…
- Speculum, nasal An instrument used to widen the opening of a nostril so the inside can be more easily seen. 'Speculum' is the…
- Piriformis syndrome Irritation of the sciatic nerve caused by compression of the nerve within the buttock by the piriformis…
- Iodine, radioactive An isotope of the chemical element iodine that is radioactive. Radioactive iodine is used in diagnostic tests…
- Mustard plaster A mild mixture of mustard seed powder, an adhesive such as flour, and water warmed and spread on a moist…
- Headache, thunderclap A sudden and excruciatingly painful headache. Some doctors feel that in the absence of a known headache…
- Body fat monitor See: Bioelectric impedance analysis