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).
Eye chart test
This test measures how well you see at various distances. The eye chart itself -- the usual one is called Snellen's chart -- is imprinted with block letters that line-by-line decrease in size, corresponding to the distance at which that…
Read the definitionRandom terms
Show more- Photocoagulation The coagulation (clotting) of tissue using a laser which produces light in the visible green wavelength that…
- Biliary atresia Congenital absence or closure of the major bile ducts, the ducts that drain bile from the liver. Biliary…
- Diaphragm pacing A procedure to help patients with spinal cord injuries to breathe. Their breathing is helped by setting the…
- Anaplasmosis A tick-borne disease of cattle, sheep, and related ruminants caused by a microorganism called Anaplasma…
- Melanoma, intraocular See: Intraocular melanoma
- Sigmoidoscope A thin lighted instrument used to view the inside of the rectum and lower colon
- Megrim Migraine. Usually periodic attacks of headaches on one or both sides of the head. Megrim (migraine) may be…
- BWS See: Beckwith-Wiedemann syndrome
- Spongiform Resembling a sponge in being soft and full of cavities, as in as in transmissible spongiform encephalopathy
- Explant 1. The original meaning: to transfer tissue from the body and place it in a culture medium for growth; and…
- Arch, aortic See: Aortic arch
- Ammonium perchlorate See: Perchlorate