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).
Ophthalmic migraine
Migraine involving the eyes but without headache. Migraine, due to a spasm of blood vessels in the brain, usually causes a headache. Flashes of light may appear as jagged lines or 'heat waves' in one or both eyes and often last 10-20…
Read the definitionRandom terms
Show more- Emery-Dreifuss muscular dystrophy See: Muscular dystrophy, Emery-Dreifuss
- Babesiosis An illness caused by the parasite Babesia which is transmitted from animals to humans by ticks. In the US, it…
- Reading frame One of the three possible ways to read a nucleotide sequence in DNA or RNA as a series of nonoverlapping…
- Hypoxic-ischemic encephalopathy Damage to cells in the central nervous system (the brain and spinal cord) from inadequate oxygen…
- Insecticide A chemical used specifically to kill or control the growth of insects. Certain insecticides have been banned…
- Glucose tolerance, impaired See: Impaired glucose tolerance
- Ductus, patent Failure for the ductus arteriosus, an arterial shunt in fetal life, to close on schedule. Before birth, blood…
- Defibrillator storm A condition that arises when a defibrillator implanted in the chest to right an arrhythmia (an abnormal heart…
- Altitude illness >If possible, don't fly or drive to high altitude. Start below 10,000 feet (3,048 meters) and walk up. >If…
- Recommended Daily Allowance Popular name for the Recommended Dietary Allowance (RDA)
- Anderson-Fabry disease See: Fabry disease
- Hygiene theory See: Hygiene hypothesis