MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
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).
Pupil dilation test
An examination that enables an eye care professional to see more of the retina, the light-sensitive layer of tissue at the back of the eye. Dilating (widening) the pupil permits the retina to be examined for signs of disease. To do this…
Read the definitionRandom terms
Show more- Forearm The portion of the upper limb from the elbow to the wrist. In popular usage, the arm extends from the…
- Gray matter The cortex of the brain which contains nerve cell bodies. The gray matter is in contrast to the white matter…
- Lymphogranuloma venereum Abbreviated LGV. An uncommon genital or anorectal (affecting the anus and/or rectum) infection that is caused…
- Vena cava, inferior A large vein that receives blood from the lower extremities, pelvis and abdomen and empties it into the right…
- Hypermagnesemia Excess magnesium. Persons with impaired kidney function should be especially careful about their magnesium…
- Cytosis 1. Suffix referring to cells, as in anisocytosis (inequality in the size of red blood cells), elliptocytosis…
- Telangiectasia, hereditary hemorrhagic See: Hereditary hemorrhagic telangiectasia
- Heroin addiction Physical addiction to heroin, often with concurrent use of other opiates when heroin itself is not available…
- American Sign Language Abbreviated ASL. A complete, complex language that employs signs made with the hands and other movements…
- Ship fever An old name for epidemic typhus, which was common in the crowded conditions aboard ship. Ship Fever and Other…
- Bursitis, aseptic A bursa is a closed fluid-filled sac that functions as a gliding surface to reduce friction between tissues…
- Radial head dislocation See: Nursemaid's elbow