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).
Nerve pathways, visual
The optic nerves serving the eyes join behind the eyes just in front of the pituitary gland to form a cross-shaped structure called the optic chiasma. Within the optic chiasma some of the nerve fibers cross. The fibers from the nasal…
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Show more- Pathological hoarding Excessive hoarding of material goods, a condition that affects up to 40% of people with obsessive compulsive…
- Insecticidal Capable of killing insects or controlling their growth
- Illness, altitude >If possible, don't fly or drive to high altitude. Start below 10,000 feet (3,048 meters) and walk up. >If…
- Polyuria The excessive passage of urine (at least 2.5 liters per day for an adult) resulting in profuse urination and…
- Abdominal Relating to the abdomen, the belly, that part of the body that contains all of the structures between the…
- Marinesco-Sjogren syndrome Syndrome: A genetic disorder characterized by very small stature, cerebellar ataxia (wobbliness), cataracts…
- Quality adjusted life year (QALY) A year of life adjusted for its quality or its value. A year in perfect health is considered equal to 1.0…
- Infarction The formation of an infarct, an area of tissue death due to a local lack of oxygen. For example, in a…
- Lyme disease Lyme disease: Lyme disease is a bacterial illness caused by a bacterium called a 'spirochete.' Lyme disease…
- Aerosol 1. In general, a fine mist or spray which contains minute particles.2. In medicine, a spray administered by a…
- Pleural effusion Excess fluid between the two membranes that envelop the lungs. These membranes are called the visceral and…
- Barotrauma, sinus See: Sinus barotrauma