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).
Excessive daytime sleepiness
A neurological disorder in which there is a sudden recurrent uncontrollable compulsion to sleep. Excessive daytime sleepiness is also known as narcolepsy. The condition is often associated with: > >Cataplexy -- a sudden loss of muscle tone…
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Show more- Transvestism Dressing in the clothing of the opposite sex. Transvestism is distinct from both transsexualism and…
- Periosteum The periosteum is a dense membrane composed of fibrous connective tissue that closely wraps (invests) all…
- FAS gene A gene that encodes one of several proteins important to apoptosis, the normal process through which cells…
- RF Rheumatoid factor. Rheumatoid factor is an antibody that is measurable in the blood. It is commonly used as a…
- Anti-platelet agents Medications that, like aspirin, reduce the tendency of platelets in the blood to clump and clot
- Methyl bromide A fumigant gas that is an effective pesticide. Methyl bromide has been used to treat the soil, grain bins…
- Effusion Too much fluid, an outpouring of fluid. A hemorrhagic effusion is one that has blood within the fluid. A…
- Bell's palsy Paralysis of the facial nerve, the nerve that supplies the facial muscles on one side of the face. Bell's…
- Radiography Film records (radiographs) of internal structures of the body. Radiography is made possible by X-rays (or…
- BSA In medicine, not the Boy Scouts of America but the body surface area
- Usher syndrome Usher syndrome: A genetic disorder characterized by hearing impairment and an eye disorder called retinitis…
- Caffeine A stimulant found naturally in coffee beans, tea leaves, cocoa beans (chocolate) and kola nuts (cola) and…