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.
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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).
Episclera
A thin membrane that covers the sclera (the white of the eye). 'Epi-' is a prefix from the Greek that means 'on, upon, at, by, near, over, on top of, toward, against, among.' Episclera = on top of the sclera.
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- Neisseria infection See: Meningococcal infection
- Leukemia, hairy cell See: Hairy cell leukemia
- Radiotherapy The treatment of disease with ionizing radiation. Also called radiation therapy. In radiotherapy, high-energy…
- Kalemia The presence of potassium in the blood. The word 'kalemia' is seldom used today although it is the basis for…
- Paracentric chromosome inversion A basic type of chromosome rearrangement. A segment that does not include the centromere (and so is…
- Phytochemical The active health-protecting compounds that are found as components of plants. Currently, the terms…
- Metacentric chromosome A chromosome with arms of equal length.
- Congenital defect A birth defect.
- Encephalitis, arboviral See: Arboviral encephalitis
- Lymphatic system The tissues and organs, including the bone marrow, spleen, thymus, and lymph nodes, that produce and store…
- Renal Having to do with the kidney. From the Latin renes (the kidneys), which gave the French les reins which mean…