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).
Ophthalmoscope
A lighted instrument, one of the most important tools of the physician, used to examine the interior of the eye, including the lens, retina and optic nerve. The common clinical ophthalmoscope consists of a concave mirror and a…
Read the definitionRandom terms
Show more- Mast cell A connective tissue cell whose normal function is unknown but which is frequently injured in allergic…
- Disc, optic The circular area in the back of the inside of the eye where the optic nerve connects to the retina. Also…
- Hirschsprung disease Hirschsprung disease: A congenital abnormality (birth defect) of the bowel in which there is absence of the…
- Cancer, colon A malignancy that arises from the inner lining of the colon. Most, if not all, of these cancers develop from…
- Colorectal cancer family history See: Colon cancer family history
- Burn, second degree A burn that looks like a first degree burn in that it is red and sensation is intact but the damage from the…
- Disease, startle A genetic disorder also known as hyperexplexia in which babies have an exaggerated startle reflex (reaction)…
- Bromobenzylcyanide A riot control agent or 'tear gas.' See: Riot control agent poisoning
- Reticuloendotheliosis, leukemic See: Hairy cell leukemia
- Coccygeal Referring to the coccyx, the small tail-like bone at the bottom of the spine, that is made up of 3-5 (average…
- Iron poisoning Iron supplements meant for adults (such as pregnant women) are a major cause of poisoning in children. Care…
- Duplication Part of a chromosome in duplicate, a particular kind of mutation (change) involving the production of one or…