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).
Refraction test
Also termed vision test, the refraction test is an examination that tests an individual's ability to see an object at a specific distance. The test is performed by an optometrist or ophthalmologist in the doctor's office. The refraction…
Read the definitionRandom terms
Show more- Hemi- Prefix meaning one half, as in hemiparesis, hemiplegia, and hemithorax. From the Greek hemisus meaning half…
- Carotid body A small 'body' of tissue rich in capillaries, at the spot the carotid artery branches in the neck, containing…
- Choking (object in airway) Partial or complete obstruction of the airway can be due to a foreign body (e.g., food, a bead, toy, etc.)…
- Family medicine Also called family practice. The medical specialty which provides continuing and comprehensive health care…
- Choroidal melanoma See: Melanoma, choroidal
- Spondylitis Inflammation of one or more of the vertebrae of the spine. Diffuse inflammation of the spine is seen in the…
- Immunization, influenza Influenza: See Immunization, flu
- Lung reduction surgery A surgical treatment for patients with advanced emphysema in which 20-35% of the emphysematous lung is…
- Abdomen The belly, that part of the body that contains all of the structures between the chest and the pelvis. The…
- Heart-hand syndrome See: Holt-Oram syndrome
- Tobacco smoking Smoking: The direct inhalation of tobacco smoke, the basis of major health hazards. Long known to cause…
- Stroke, National Institute Neurological Disorders Nd (NINDS): One of the National Institutes of Health in the U.S., the NINDS's mission is to 'support and…