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).
Optic nerve
The optic nerve connects the eye to the brain. The optic nerve carries the impulses formed by the retina, the nerve layer that lines the back of the eye and senses light and creates impulses. These impulses are dispatched through the optic…
Read the definitionRandom terms
Show more- Transplant, heart See: Heart transplant
- Zenker's diverticulum See: Zenker diverticulum
- Pterygium A winglike triangular membrane. Although a pterygium can be anywhere, including behind the knee, it commonly…
- CC chemokine receptor 5 See: CCR5
- Disease, Bright's Chronic inflammation of the blood vessels in the kidney with protein, specifically albumin, in the urine…
- Tooth numbering The accordance of a unique number to each tooth. The Universal/National System for permanent (adult)…
- Disorder, specific developmental A disorder that selectively affects one area of development, sparing essentially all other areas of…
- Radioactive iodine An isotope of the chemical element iodine that is radioactive. Radioactive iodine is used in diagnostic tests…
- Acute thrombocytopenic purpura The sudden onset of low blood platelet levels with bleeding into the skin and elsewhere. Acute…
- Joint, calcaneocuboid The calcaneocuboid joint is located in the foot between the calcaneus bone (the heel bone) and the cuboid…
- Somatostatin A hormone widely distributed throughout the body, especially in the hypothalamus and pancreas, that acts as…
- Chronic illness An illness that persists for a long period of time. The term 'chronic' comes from the Greek chronos, time and…