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).
Melanoma, ocular
A malignant melanoma arising from a structure within the eye. The most common sites of origin are the choroid, ciliary body, and iris. It tends to occur after age 40. The tumor may metastasize from the eye. The most common site of…
Read the definitionRandom terms
Show more- Replication A turning back, repetition, duplication, reproduction
- Node, atrioventricular The atrioventricular (AV) node is an electrical relay station between the atria (the upper) and the…
- Gametogenesis The development and production of the male and female germ cells required to form a new individual. The male…
- Blood sugar, high An elevated level of the sugar glucose in the blood. Also called hyperglycemia. High blood sugar is a finding…
- Eye, dry See: Dry eye
- Arenaviridae See: Arenavirus
- Hemorrhoids Hemorrhoids: See: Hemorrhoid.
- Hairy cell leukemia A form of chronic leukemia in which malignant B-lymphocytes (a type of white blood cell) are seen in the bone…
- Research, controlled A study that compared results from a treated group and a control group. The control group may receive no…
- Symphysis pubis The area in the front of the pelvis where the pubic bones (the two bones of the pubis) meet
- Radial keratotomy An eye surgery procedure designed to flatten the cornea, reducing its optical power, to correct…
- Stripping Surgery to treat varicose veins. The problematic veins are 'stripped' out by passing a flexible device…